01886nas a2200253   4500008004100000022001400041245008200055210006900137260010600206300001400312490000700326520094000333653003101273653004301304653001701347100002001364700001801384700002401402700002001426700002301446700002001469700002901489856011401518       2011                        eng d  a0038-092X00aEnhanced DSSC performance with high surface area thin anatase TiO2 nanoleaves0 aEnhanced DSSC performance with high surface area thin anatase Ti  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJUN  a1213-12190 v853 a<p>Thin anatase TiO2 nanoleaves (NLs) with high surface area (similar to 93 m(2)/g) are synthesized by hydrothermal route and dye-sensitized solar cells (DSSC) made using such NLs are compared with those made with hydro-thermally synthesized TiO2 nanoparticles and the Degussa P25 powder. The NLs-based DSSCs show increment of 16% and 24% in the total conversion efficiency over the cells made with NPs and P25 respectively. Interestingly, the highest increment in the conversion efficiency (similar to 35%) is achieved for cells made using a 50:50 (wt/wt) mixture of NLs and NPs. In this case the dye loading is found to be &gt;50% higher than the case of NP films. Moreover the DC resistance of diffusion of I-3(-) in electrolyte (as revealed by the electrochemical impedance spectroscopy) is substantially lower than the NP film case, other cell parameters being nominally comparable. (C) 2011 Elsevier Ltd. All rights reserved.</p>10aDye-sensitized solar cells10aElectrochemical impedance spectroscopy10ahydrothermal1 aDhas, Vivek, V.1 aMuduli, Subas1 aAgarkar, Shruti, A.1 aRana, Abhimanyu1 aHannoyer, Beatrice1 aBanerjee, Rahul1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/enhanced-dssc-performance-high-surface-area-thin-anatase-tio2-nanoleaves-001781nas a2200289   4500008004100000022001400041245012200055210006900177260007100246300001400317490000600331520076000337653002101097653001301118653003001131653001401161653001501175653001101190100002401201700002501225700002001250700002901270700001801299700002101317700002901338856012401367       2011                        eng d  a1944-824400aIsobutrin from butea monosperma (flame of the forest): a promising new natural sensitizer belonging to chalcone class0 aIsobutrin from butea monosperma flame of the forest a promising   a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUL  a2440-24440 v33 a<p>In this work, ``isobutrin'', an ecofriendly sensitizer that is extracted from Butea monosperma (commonly known as ``Flame of the Forest'') flowers, is introduced. It is a bright yellow pigment belonging to the chalcone class and is examined as a sensitizer for optoelectronic applications. It is observed that chelation of this dye with Ti ions results into a strong dye-TiO(2) charge transfer (DTCT) band in the visible region. This Ti-Isobutrin chelate is stable, irreversible and its formation is studied using Benesi-Hildebrand plot. The locations of HOMO-LUMO states of the Ti-isobutrin chelate and the corresponding band alignment with TiO(2) are obtained. Also, a thermal stability test revealed that isobutrin is stable above 100 degrees C.</p>10aButea monosperma10achalcone10adye-sensitized solar cell10aisobutrin10asensitizer10aTiO(2)1 aAgarkar, Shruti, A.1 aKulkarni, Roshan, R.1 aDhas, Vivek, V.1 aChinchansure, Ashish, A.1 aHazra, Partha1 aJoshi, Swati, P.1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/isobutrin-butea-monosperma-flame-forest-promising-new-natural-sensitizer-belonging-001218nas a2200181   4500008004100000022001400041245013600055210006900191260011000260300001600370490000600386520042600392100002400818700002000842700001800862700002900880856012700909       2012                        eng d  a2046-206900aDye sensitized solar cell (DSSC) by a novel fully room temperature process: a solar paint for smart windows and flexible substrates0 aDye sensitized solar cell DSSC by a novel fully room temperature  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR  a11645-116490 v23 a<p>We report the development of a titania-nanoparticle-based solar paint which gives a conversion efficiency of 3.6% on FTO/glass substrates under fully room temperature processing. The paint cures quickly saving time in the cell fabrication process. Even on a flexible ITO/PET substrate efficiency of 2.4% was achieved. We present and analyze the results of described materials and device property characterizations.</p>1 aAgarkar, Shruti, A.1 aDhas, Vivek, V.1 aMuduli, Subas1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/dye-sensitized-solar-cell-dssc-novel-fully-room-temperature-process-solar-paint-smart-001592nas a2200253   4500008004100000022001400041245014200055210006900197260011000266300001400376490000600390520058900396100001900985700002401004700002401028700002101052700001801073700002001091700002401111700002301135700002301158700002901181856012801210       2012                        eng d  a2040-336400aLaser synthesized super-hydrophobic conducting carbon with broccoli-type morphology as a counter-electrode for dye sensitized solar cells0 aLaser synthesized superhydrophobic conducting carbon with brocco  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV  a6730-67340 v43 a<p>A laser photochemical process is introduced to realize superhydrophobic conducting carbon coatings with broccoli-type hierarchical morphology for use as a metal-free counter electrode in a dye sensitized solar cell. The process involves pulsed excimer laser irradiation of a thin layer of liquid haloaromatic organic solvent o-dichlorobenzene (DCB). The coating reflects a carbon nanoparticle-self assembled and process-controlled morphology that yields solar to electric power conversion efficiency of 5.1% as opposed to 6.2% obtained with the conventional Pt-based electrode.</p>1 aGokhale, Rohan1 aAgarkar, Shruti, A.1 aDebgupta, Joyashish1 aShinde, Deodatta1 aLefez, Benoit1 aBanerjee, Abhik1 aJog, Jyoti, Prakash1 aMore, Mahendra, A.1 aHannoyer, Beatrice1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/laser-synthesized-super-hydrophobic-conducting-carbon-broccoli-type-morphology-counter-002145nas a2200181   4500008004100000022001400041245015800055210006900213260007100282300001400353490000800367520134000375100003301715700002401748700002901772700003001801856013201831       2012                        eng d  a1932-744700aToward a quantitative correlation between microstructure and DSSC efficiency: a case study of TiO2-xNx nanoparticles in a disordered mesoporous framework0 aToward a quantitative correlation between microstructure and DSS  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN  a2581-25870 v1163 a<p>The efficiency (eta) of a dye-sensitized solar cell (DSSC) depends on various parameters, the critical factors being a fast charge carrier transport and a slow rate of electron-hole recombination. The present article describes a simple combustion synthesis method to prepare TiO2-xNx with following four important features that directly influences eta: (1) a disordered mesoporous structural framework with high surface area to give high dye-loading and a small diffusion length for charge carriers allowing rapid movement to the surface; (2) electrically interconnected nanocrystalline TiO2-xNx particles with good necking and predominant (101) anatase facets to minimize electron-hole recombination; (3) low charge storage capacity in the titania framework; and (4) surface unsaturation assisting all the above factors. The pseudo-three-dimensional nature of mesoporous TiO2-xNx with the above features demonstrates the importance of textural features, and porosity allows faster diffusion of charge carriers to surface and their utilization to generate power. A quantitative correlation between interconnected nanoparticles over larger distances in a mesoporous framework and eta is demonstrated. This study also demonstrates an inexpensive and rapid method of producing the photoanode material with high eta in about 10 min.</p>1 aSivaranjani, Kumarsrinivasan1 aAgarkar, Shruti, A.1 aOgale, Satishchandra, B.1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/toward-quantitative-correlation-between-microstructure-and-dssc-efficiency-case-study-tio2-001929nas a2200229   4500008004100000022001400041245009300055210006900148260010600217300001200323490000800335520110400343653000901447653001501456653001701471653000801488100001701496700002401513700002401537700001801561856012001579       2014                        eng d  a0038-092X00aComparative study on the dye sensitized solar cell performance of solution processed ZnO0 aComparative study on the dye sensitized solar cell performance o  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAPR  a143-1510 v1023 a<p>We have monitored the performance of the dye-sensitized solar cells (DSSC) using solution processed ZnO having different shapes and aspect ratios. The aspect ratio and surface area of the ZnO structures have been regulated by carefully controlling the precursor concentration and reaction conditions. The shape of the synthesized structures has been varied from larger rods to smaller rods to hexagonal prisms. The synthesized hexagonal prism shaped ZnO with an aspect ratio of around one exhibited the highest surface area of 42 m(2)/g. The ZnO rods with higher aspect ratios of 5 and 16 exhibited lower surface areas of 22 and 2 m(2)/g, respectively. The dye sensitized solar cells constructed using the as-prepared ZnO structures and N719 dye molecules, exhibited efficiencies that varied as a function of surface area of the samples, with ZnO hexagonal prism exhibiting a maximum efficiency of around 1.38 +/- 0.01%. The results indicated a direct correlation between the surface area of the ZnO structures and the energy conversion efficiency. (C) 2014 Elsevier Ltd. All rights reserved.</p>10aDSSC10aPhotoanode10asurface area10aZnO1 aJana, Arpita1 aDas, Partha, Pratim1 aAgarkar, Shruti, A.1 aDevi, Sujatha  uhttps://library.ncl.res.in/content/comparative-study-dye-sensitized-solar-cell-performance-solution-processed-zno-002174nas a2200205   4500008004100000022001400041245014700055210006900202260007100271300001400342490000700356520133100363100002401694700002401718700002601742700002401768700002901792700001801821856012901839       2014                        eng d  a0020-166900aDefects in chemically synthesized and thermally processed ZnO nanorods: implications for active layer properties in dye-sensitized solar cells0 aDefects in chemically synthesized and thermally processed ZnO na  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAPR  a3961-39720 v533 a<p>We have carried out the effect of post annealing temperatures on the performance of solution-grown ZnO rods as photoanodes in dye-sensitized solar cells. Keeping our basic objective of exploring the effect of native defects on the performance of DSSC, we have synthesized ZnO rods having length in the range of 2-5 mu m by a modified sonication-induced precipitation technique. We performed extensive characterization on the samples annealed at various temperatures and confirmed that annealing at 300 degrees C results in ZnO rods with minimum native defects that have been identified as doubly ionized oxygen vacancies. The electron paramagnetic resonance measurements on the samples, on the other hand, confirmed the presence of shallow donors in the low temperature annealed samples. We also carried out electrochemical impedance measurements to understand the transport properties at different interfaces in the solar cell assembly. We could conclude that solution-processed ZnO rods annealed at 300 degrees C are better suited for fabricating DSSC with improved efficiency (1.57%), current density (5.11 mA/cm(2)), and fill factor (45.29%). On the basis of our results, we were able to establish a close connection between the defects in the metal oxide electron transporting nano system and the DSSC performance.</p>1 aDas, Partha, Pratim1 aAgarkar, Shruti, A.1 aMukhopadhyay, Soumita1 aManju, Unnikrishnan1 aOgale, Satishchandra, B.1 aDevi, Sujatha  uhttps://library.ncl.res.in/content/defects-chemically-synthesized-and-thermally-processed-zno-nanorods-implications-active-002280nas a2200241   4500008004100000022001400041245013700055210006900192260010600261300001200367490000800379520132200387653002801709653002201737653000901759653002101768100002401789700002201813700002401835700002501859700002501884856012901909       2014                        eng d  a0013-468600aElectronically and catalytically functional carbon cloth as a permeable and flexible counter electrode for dye sensitized solar cell0 aElectronically and catalytically functional carbon cloth as a pe  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcMAR  a248-2530 v1233 a<p>In this work we demonstrate that a conducting carbon cloth obtained by one-step pyrolysis of easily available cellulose fabric competes favorably with the commonly employed expensive platinum/FTO system as a counter electrode for dye sensitized solar cell (DSSC). In view of the low carbonization temperature (1000 degrees C) which forbids full graphitization, the nature of carbon in this case is represented by topologically randomly assembled nanoscale graphene units (turbostratic carbon). This morphology has high density of edge states and oxygen containing surface groups rendering multitude of catalytic sites for the reduction of I-3(-). Moreover the cloth is permeable to the dye and/or liquid electrolyte and its absorption properties also help retain the electrolyte. A fairly high efficiency of 5.8% is achieved using such cloth as a counter electrode as against 7% with the conventional Pt/FTO system. Moreover, the permeable property of the cloth eliminates a complete step of drilling hard TCO substrates for final dispensing of electrolyte into the device and the sealing process is also facile. In fact even the dye can be dispensed through the cloth. Finally, the flexibility of the carbon cloth can adapt easily to flexible/wearable DSSC designs. (C) 2014 Elsevier Ltd. All rights reserved.</p>10aconducting carbon cloth10acounter electrode10aDSSC10awithout drilling1 aTathavadekar, Mukta1 aBiswal, Mandakini1 aAgarkar, Shruti, A.1 aGiribabu, Lingamallu1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/electronically-and-catalytically-functional-carbon-cloth-permeable-and-flexible-counter-002001nas a2200265   4500008004100000022001400041245008700055210006900142260007100211300001400282490000600296520106100302653003101363653001601394653002001410100002301430700001801453700002401471700002201495700002401517700002001541700002901561700002501590856012001615       2014                        eng d  a2168-048500aFunctionally engineered egg albumen gel for quasi-solid dye sensitized solar cells0 aFunctionally engineered egg albumen gel for quasisolid dye sensi  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcDEC  a2707-27140 v23 a<p>In this report, we demonstrated an interesting application of a bioderived material for the dye sensitized solar cells (DSSCs). Egg white, the clear liquid in a hen's egg, which possesses a remarkable gelling/cross-linking ability, was applied in the form of a gel electrolyte in a DSSC architecture to enhance its durability. A hybrid gel composed of poly(acrylic acid), polyaniline and egg albumen was synthesized, and the cell efficiency, stability and durability of the corresponding DSSC device were studied in detail. The dye sensitized solar cell with the egg albumen based electrolyte demonstrated a conversion energy efficiency of 4.6%. Further, a chemically modified egg albumen with ethylenediaminetetraacetic dianhydride showed improved cross-linking, microstructural and conductivity properties of the gel, and yielded a remarkable 5.75% conversion efficiency. Electrochemical impedance spectroscopy data showed favorable characteristics for charge transport through the modified gel and supported the efficiency observations very well.</p>10adye sensitized solar cells10aEgg albumen10agel electrolyte1 aKelkar, Sarika, A.1 aPandey, Komal1 aAgarkar, Shruti, A.1 aSaikhedkar, Nidhi1 aTathavadekar, Mukta1 aAgrawal, Ishita1 aGundloori, Rathna, V. N.1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/functionally-engineered-egg-albumen-gel-quasi-solid-dye-sensitized-solar-cells-001693nas a2200193   4500008004100000022001400041245015300055210006900208260011000277300001600387490000600403520084100409100002401250700002401274700002001298700002401318700002501342856013201367       2014                        eng d  a2046-206900aNanophase CulnS(2) nanosheets/CuS composite grown by the SILAR method leads to high performance as a counter electrode in dye sensitized solar cells0 aNanophase CulnS2 nanosheetsCuS composite grown by the SILAR meth  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY  a21989-219960 v43 a<p>Single phase CulnS(2) (CIS) nanosheets are synthesized on TiO2 coated FTO by the simple technique of Successive Ionic Layer Adsorption Reaction (SILAR) followed by annealing at 500 degrees C. Annealing at a lower temperature of 250 degrees C is found to yield CuS nanoparticles in addition to the CIS phase. Both single phase CIS and the CuS/CIS nanocomposite were examined as counter electrodes for a dye-sensitized solar cell (DSSC). The CIS-CuS composite is found to have a synergistic effect on the catalytic performance toward the reduction of tri-iodide, yielding a power conversion efficiency of 6.3% as compared to pristine CIS (5%) or CuS (3.5%). The possible reasons behind the high performance of the composite are elucidated using cyclic voltammetry (CV) measurements and electrochemical impedance spectroscopy (EIS).</p>1 aBhosale, Reshma, K.1 aAgarkar, Shruti, A.1 aAgrawal, Ishita1 aNaphade, Rounak, A.1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/nanophase-culns2-nanosheetscus-composite-grown-silar-method-leads-high-performance-counter-001445nas a2200217   4500008004100000022001400041245013000055210006900185260011000254300001400364490000600378520054900384100002000933700002600953700002100979700002401000700002301024700002401047700002901071856012701100       2014                        eng d  a2046-206900aNickel cobalt sulfide nanoneedle array as an effective alternative to pt as a counter electrode in dye sensitized solar cells0 aNickel cobalt sulfide nanoneedle array as an effective alternati  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV  a8289-82940 v43 a<p>Self supported nickel cobalt sulfide (NCS) nanoneedles are directly formed on FTO glass substrates by sulphurization of nickel cobalt oxide nanoneedles (grown by a hydrothermal method) in the presence of a hydrogen sulfide and argon gas mixture. These NCS nanoneedles when used as a counter electrode for dye sensitized solar cells (DSSCs) show efficient catalytic activity towards the I-/I-3(-) redox couple, and lead to an impressive efficiency of 6.9%, compared with 7.7% obtained with a Pt electrode in similarly constructed devices.</p>1 aBanerjee, Abhik1 aUpadhyay, Kush, Kumar1 aBhatnagar, Sumit1 aTathavadekar, Mukta1 aBansode, Umesh, P.1 aAgarkar, Shruti, A.1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/nickel-cobalt-sulfide-nanoneedle-array-effective-alternative-pt-counter-electrode-dye-001833nas a2200217   4500008004100000022001400041245007300055210006900128260006900197300001400266490000800280520106500288653002401353653001901377653003001396653001901426100002101445700002401466700002201490856010301512       2014                        eng d  a0254-058400aNovel precursors for anatase nanorods and their application in DSSCs0 aNovel precursors for anatase nanorods and their application in D  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcOCT  a1110-11160 v1473 a<p>Syntheses for the formation of two new precursors for TiO2 nanorods: titanium propanediolate and titanium erythritolate, have been detailed. These precursors have a rod like morphology and have been found to have higher thermal stability than commercially available precursors. The conversion of the precursors to anatase phase of TiO2 involves a simple heating protocol and importantly the morphology is conserved. The resulting anatase nanorods have been characterised and evaluated as photoanodes in dye sensitized solar cells (DSSCs). Overall device efficiencies of 3.2% and 2.3% were achieved when anatase rods (obtained from titanium propanediolate and titanium erythritolate respectively) were used. These values are higher than the 1.1% efficiency obtained from the control device (made with spherical anatase nanoparticles). It is found that forming ordered 1-D rods leads to enhanced charge transport and charge collection at the electrode along with a commensurate decrease in charge recombination. (C) 2014 Elsevier B.V. All rights reserved.</p>10aInorganic compounds10aNanostructures10aNon-crystalline materials10aSol-gel growth1 aMishra, Biswajit1 aAgarkar, Shruti, A.1 aKhushalani, Deepa  uhttps://library.ncl.res.in/content/novel-precursors-anatase-nanorods-and-their-application-dsscs-001522nas a2200217   4500008004100000022001400041245005100055210005100106260008100157300001100238490000600249520084000255653001801095653001401113653000901127100002101136700001801157700002401175700002201199856008301221       2014                        eng d  a2053-159100aSynthetic precursor to vertical TiO2 nanowires0 aSynthetic precursor to vertical TiO2 nanowires  aTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLANDbIOP PUBLISHING LTDcJUN  a0250050 v13 a<p>An easy protocol for improvement in formation of the photoanode in a dye sensitized solar cell is addressed. Specifically, a novel synthesis for the formation of a TiO2 precursor: titanium butanediolate, is detailed. This precursor is found to have higher thermal and temporal stability than commercially available TiO2 precursors and it has successfully been employed in the one-pot synthesis of rutile nanowires grown directly on a conducting substrate: fluorine doped tin oxide (FTO). This synthesis has been further extended to directly form a mixed phase TiO2 film consisting of rutile nanowires along with anatase spherical particles on FTO and this assembly has been used as the photoanode in a dye-sensitized solar cell. The synergistic effect of the two phases has provided a net DSSC efficiency of 4.61% with FF = 61%.</p>10aNanomaterials10aNanowires10aTiO21 aMishra, Biswajit1 aGhildiyal, P.1 aAgarkar, Shruti, A.1 aKhushalani, Deepa  uhttps://library.ncl.res.in/content/synthetic-precursor-vertical-tio2-nanowires01804nas a2200265   4500008004100000022001400041245013000055210006900185260010600254300001000360490000800370520077000378653001701148653002101165653002701186653001901213100002801232700002401260700002001284700002301304700002401327700002701351700002901378856013101407       2015                        eng d  a0038-092X00aEnhancing efficiency of perovskite solar cell via surface microstructuring: superior grain growth and light harvesting effect0 aEnhancing efficiency of perovskite solar cell via surface micros  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcFEB  a12-190 v1123 a<p>We have introduced a novel approach to enhance the perovskite solar cell efficiency by controlling the grain growth and light harvesting properties of perovskite crystallites. Instead of using a mesoporous TiO2 layer, we have modified the surface microstructuring of the TiO2 film by dispensing nano assembled TiO2 submicron structures (nanobeads, NBs) on TiO2 compact layer. With this new approach solar cell efficiency was improved significantly through an increase in both J(sc) and V-oc. This high efficiency is attributed to crystallite size of the perovskite phase. These also act as light scattering centers giving higher current density and reduced recombination effects giving higher open circuit voltage. (C) 2014 Elsevier Ltd. All rights reserved.</p>10aGrain growth10aLight harvesting10aPerovskite solar cells10aTiO2 nanobeads1 aTathavadekar, Mukta, C.1 aAgarkar, Shruti, A.1 aGame, Onkar, S.1 aBansode, Umesh, P.1 aKulkarni, Sneha, A.1 aMhaisalkar, Subodh, G.1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/enhancing-efficiency-perovskite-solar-cell-surface-microstructuring-superior-grain-growth-001550nas a2200193   4500008004100000022001400041245011200055210006900167260007100236300001400307490000800321520078500329100002301114700002001137700002001157700002401177700002501201856013001226       2015                        eng d  a1932-744700aHybrid perovskite films by a new variant of pulsed excimer laser deposition: a room-temperature dry process0 aHybrid perovskite films by a new variant of pulsed excimer laser  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAPR  a9177-91850 v1193 a<p>A new variant of the classic pulsed laser deposition (PLD) process is introduced as a room-temperature dry process for the growth and stoichiometry control of hybrid perovskite films through the use of nonstoichiometric single target ablation and off-axis growth. Mixed halide hybrid perovskite films nominally represented by CH(3)NH(3)PbI(3-x)A(x) (A = Cl or F) are also grown and are shown to reveal interesting trends in the optical properties and photoresponse. Growth of good quality lead-free CH3NH3SnI3 films is also demonstrated, and the corresponding optical properties are presented. Finally, perovskite solar cells fabricated at room temperature (which makes the process adaptable to flexible substrates) are shown to yield a conversion efficiency of about 7.7%.</p>1 aBansode, Umesh, P.1 aNaphade, Rounak1 aGame, Onkar, S.1 aAgarkar, Shruti, A.1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/hybrid-perovskite-films-new-variant-pulsed-excimer-laser-deposition-room-temperature-dry-001785nas a2200253   4500008004100000022001400041245008200055210006900137260007300206300001200279490000700291520094300298653000901241653001501250653001301265653002301278653000801301100002401309700002601333700002401359700001701383700001801400856011301418       2015                        eng d  a1293-255800aPhotochemical performance of ZnO nanostructures in dye sensitized solar cells0 aPhotochemical performance of ZnO nanostructures in dye sensitize  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcOCT  a237-2430 v483 a<p>In this work, the photoconversion efficiencies of ZnO having diverse microstructures and structural defects have been investigated. A conversion efficiency of 138% was achieved for the DSSCs fabricated with as prepared ZnO nanorods having minimum vacancy defects and a favourable one dimensional directional pathway for electron conduction. The DSSCs fabricated with ZnO nanoparticles exhibited relatively low conversion efficiency of 1.004% probably due to multiple trapping/detrapping phenomena within the grain boundaries and ZnO flowers though exhibited a high dye adsorption capability exhibited the lowest conversion efficiency of 0.59% due to a high concentration of structural defects. Based on the experimental evidences, we believe that the type of defects and their concentrations are more important than shape in controlling the overall performance of ZnO based DSSCs. (C) 2015 Elsevier Masson SAS. All rights reserved.</p>10aDSSC10aEfficiency10aEmission10aStructural defects10aZnO1 aDas, Partha, Pratim1 aMukhopadhyay, Soumita1 aAgarkar, Shruti, A.1 aJana, Arpita1 aDevi, Sujatha  uhttps://library.ncl.res.in/content/photochemical-performance-zno-nanostructures-dye-sensitized-solar-cells-0