01988nas a2200217   4500008004100000022001400041245011300055210006900168260011000237300001400347490000600361520112000367100002501487700002101512700001701533700002501550700001801575700002701593700002101620856012901641       2013                        eng d  a2046-206900aStructural variations of D-pi-A dyes influence on the photovoltaic performance of dye-sensitized solar cells0 aStructural variations of DpiA dyes influence on the photovoltaic  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR  a7921-79270 v33 a<p>Two new organic D-pi-A dyes containing identical pi-conjugated spacer and anchoring/acceptor moieties but different donor groups were designed and synthesized. These dyes containing didodecylcyclopentadithiophene (CPDT) as a spacer, cyanoacrylic acid as an acceptor and N-butyl-carbazole or N-butyl-phenothiazine moieties as electron donor groups are labelled as V4 and V11 dyes, respectively. The variation in the donor group of these two dyes, that influences the photophysical, electrochemical and photovoltaic parameters, was investigated. The highest photovoltaic conversion efficiency of 7.5% was obtained with V4 dye at AM 1.5 G full sunlight intensity (100 mWcm(-2)). Comparison of phenothiazine donor dyes with two different pi-conjugated spacers, CPDT (V11) and vinyl thiophene (V7) containing devices shows that the V-oc of V7 dye is lower than that of V11 due to the downward shift of the conduction band edge. Transient photovoltage and electrochemical impedance spectroscopy measurements were performed to explain the differences in the PV parameters by varying the donors and/or spacer groups.</p>1 aMarszalek, Magdalena1 aNagane, Satyawan1 aIchake, Amol1 aHumphry-Baker, Robin1 aPaul, Vincent1 aZakeeruddin, Shaik, M.1 aGratzel, Michael  uhttps://library.ncl.res.in/content/structural-variations-d-pi-dyes-influence-photovoltaic-performance-dye-sensitized-solar-001468nas a2200193   4500008004100000245010200041210006900143260000800212300001400220490000700234520077400241100002001015700002101035700001901056700002401075700002201099700002501121856012801146       2017                        eng d00aSynthetic manipulation of hybrid perovskite systems in search of new and enhanced functionalities0 aSynthetic manipulation of hybrid perovskite systems in search of  cOCT  a3722-37390 v103 aOver the past few years the organic-inorganic hybrid perovskite systems have emerged as a promising class of materials for photovoltaic and electroluminescent thin-film device applications, in view of their unique set of tunable optoelectronic properties. Importantly, these materials can be easily solution-processed at low temperatures and as such are amenable to facile molecular engineering. Thus, a variety of low-dimensional forms and quantum structures of these materials can be obtained through strategic synthetic manipulations through small molecule incorporation or molecular ion doping. In this Minireview, we specifically focus on these approaches and outline the possibilities of utilizing these for enhanced functionalities and newer application domains.1 aNaphade, Rounak1 aNagane, Satyawan1 aBansode, Umesh1 aTathavadekar, Mukta1 aSadhanala, Aditya1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/synthetic-manipulation-hybrid-perovskite-systems-search-new-and-enhanced-functionalities