Unsymmetrical extended 𝜋-conjugated zinc phthalocyanine for sensitization of nanocrystalline TiO2 films

Journal of Chemical Sciences

M Grätzel²  P Yella Reddy¹  Ch Vijay Kumar¹  Jun-Ho Yum²  Md K Nazeeruddin²  L Giribabu1¹ 

[1] Nanomaterials Laboratory, Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Hyderabad 500 007$$;Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of basic Sciences, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland$$

关键词: Dye sensitized solar cells;    phthalocyanine;    extended 𝜋-conjugation;    unsymmetrical zinc phthalocyanine and redox electrolyte.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown