02001nas 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-002541nas a2200253   4500008004100000022001400041245016400055210006900219260000800288300001400296490000800310520162600318653003101944653002001975653001901995653000802014100002802022700002002050700002002070700002402090700003002114700002102144856012202165       2019                        eng d  a0169-433200aEvolution of ZnO nanostructures as hexagonal disk: Implementation as photoanode material and efficiency enhancement in Al: ZnO based dye sensitized solar cells0 aEvolution of ZnO nanostructures as hexagonal disk Implementation  cMAR  a1130-11380 v4703 a<p>Hexagon shaped pristine and Al doped ZnO nanodisks (NDs) with exposed +/- [0001] polar facets were successfully synthesized using modified sol-gel method without the involvement of any structural directing or capping agents. It was investigated that OH- ions in mixed solvent system is responsible for pore formation and inhibit the growth of ZnO along the direction of c-axis leading to a high percentage exposure of active +/- [0001] polar facets and encourage the formation of ZnO NDs. Crystallographic analysis revealed that crystallite size and lattice constants are decreased, with the addition of Al3+ ions. The results obtained from Raman, and XPS analysis further corroborated with the XRD results, revealed the successful incorporation of Al3+ ions into ZnO lattice. Optical study revealed the band gap tunability with the incorporation of Al ion as dopant. Enhanced power conversion efficiency (PCE) of 1.96% (J(sc) similar to 7.69 +/- 0.23 mA/cm(2)) was observed for Al: ZnO hexagonal NDs based DSSC. The increased PCE in Al: ZnO based DSSC can be attributed to the higher inner surface area for dye anchoring by the interconnected network of the disk-like structure. The obtained results were satisfactory and most importantly the synthesis procedure proposed in present work is excellent for the synthesis of perfectly hexagonal shaped disks under precised synthesis parameters. The device interface study was further conducted using electrochemical impedance spectroscopy which revealed better charge transport process and charge storage ability with the incorporation of Al3+ ions into ZnO lattice.</p>10adye sensitized solar cells10aHexagonal disks10aSol-gel method10aZnO1 aParra, Mohammad, Ramzan1 aPandey, Padmini1 aSiddiqui, Hafsa1 aSudhakar, Vediappan1 aKrishnamoorthy, Kothandam1 aHaque, Fozia, Z.  uhttps://library.ncl.res.in/content/evolution-zno-nanostructures-hexagonal-disk-implementation-photoanode-material-and