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Giribabu L.,Indian Institute of Chemical Technology | Singh V.K.,Indian Institute of Chemical Technology | Kumar C.V.,Indian Institute of Chemical Technology | Soujanya Y.,Indian Institute of Chemical Technology | And 2 more authors.
Solar Energy | Year: 2011

We have designed a new triphenylamine-phthalocyanine based sensitizer (Pc-Org-1) having three bulky triphenylamine groups, which acts as donor and two carboxyl groups, which acts as acceptor as well as servers to graft onto nanocrystalline TiO 2. The new sensitizer was fully characterized by CHN, Mass, UV-Vis, fluorescence spectroscopies and cyclic voltammetry. The bulky triphenylamine groups are further reducing the aggregation of phthalocyanine macrocyle. DFT studies indicate that HOMO is delocalized π-electron system of phthalocyanine and LUMO is located on carboxyl groups. The new photosensitizer was tested in dye-sensitized solar cells using a durable redox electrolyte and compared its performance with PCH001. © 2011 Elsevier Ltd. Source


Giribabu L.,Indian Institute of Chemical Technology | Singh V.K.,Indian Institute of Chemical Technology | Srinivasu M.,Indian Institute of Chemical Technology | Kumar C.V.,Indian Institute of Chemical Technology | And 3 more authors.
Journal of Chemical Sciences | Year: 2011

A new high molar extinction coefficient heteroleptic ruthenium(I(I) complex (m-BL-1) that contains a 4,4'4"-tricaboxy-2,2':6',2"-terpyridine, 4,4'-bis-[3,5-di-tert-butyl-phenyl) -vinyl]-[2,2']bipyridyl and a thiocyanate ligand in its molecular structure has been synthesized and completely characterized by CHN, Mass,1H-NMR, UV-Vis, and fluorescence spectroscopies as well as cyclic voltammetry. The new sensitizer was tested in dye-sensitized solar cells using three different redox electrolytes and compared its performance to that of standard sensitizer black dye. © Indian Academy of Sciences. Source

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