Unsymmetrical extended 𝜋-conjugated zinc phthalocyanine for sensitization of nanocrystalline TiO2 films
L Giribabu Ch Vijay Kumar P Yella Reddy Jun-Ho Yum M Grätzel Md K Nazeeruddin
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We have designed and synthesized a new unsymmetrical zinc phthalocyanine based on `push-pull’ and extended 𝜋-conjugation concept, PCH008. The new sensitizer was fully characterized by CHN anlysis, UV-Vis., fluorescence spectroscopies and cyclic voltammetry. The new sensitizer which upon anchoring onto nanocrystalline TiO2 film exhibit a short circuit current of 5.63 mA cm-2, open circuit potential of 557.0 mV and a fill factor of 0.75 corresponding to an overall conversion efficiency of 2.35% under standard global air mass (AM) 1.5 solar conditions and compared its performance with literature reported phthalocyanine dyes.
L Giribabu1 Ch Vijay Kumar1 P Yella Reddy1 Jun-Ho Yum2 M Grätzel2 Md K Nazeeruddin2
Volume 135, 2023
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