Simple Fluorene Based Triarylamine Metal-Free Organic Sensitizers

被引：31

作者：

Gupta, K. S. V. ^{[1
]}

Singh, Surya Prakash ^{[1
]}

Islam, A. ^{[2
]}

Han, L. ^{[2
]}

Chandrasekharam, M. ^{[1
]}

机构：

[1] CSIR Indian Inst Chem Technol, I&PC Div, Hyderabad 500607, Andhra Pradesh, India

[2] Natl Inst Mat Sci, Photovolta Mat Unit, Tsukuba, Ibaraki 3050047, Japan

来源：

ELECTROCHIMICA ACTA | 2015年 / 174卷

关键词：

Dye sensitized solar cells; D-pi-A systems; Fluorene derivatives; Cyanoacrylic acid; Rhodanine-3-acetic acid; SOLAR-CELLS; HIGH-EFFICIENCY; ELECTRON-INJECTION; PHOTOVOLTAIC PERFORMANCE; RUTHENIUM SENSITIZER; CO-SENSITIZATION; ANCHORING GROUPS; FURAN MOIETY; DYE; TIO2;

D O I：

10.1016/j.electacta.2015.05.158

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Two D-pi-A organic sensitizers SPSGOD3 and SPSGOD4 differing in anchoring groups (cyanoacrylic acid & rhodanine-3-acetic acid) but with common donor (N-(9,9-dihexy1-9H-fluoren-2-yl)-9,9-dihexyl-N-phenyl-9H-fluoren-2-amine) and pi- spacer (furan) have been designed and synthesized for dye-sensitized solar cells (DSSCs). The sensitizers are fully characterized by H-1 NMR, C-13 NMR, MS and IR spectroscopy techniques. Photophysical, photovoltaic and electrochemical properties of these dyes were investigated. The dye with cyanoacrylic acid anchor (SPSGOD3) for test cell showed maximum IPCE of 79% at 485 nm, where as the dye with rhodanine-3-acetic acid anchor (SPSGOD4) reached maximum IPCE of 67% at 536 nm. The overall power conversion efficiency (eta) of DSSCs sensitized with SPSGOD3 and SPSGOD4 were 6.21% and 3.78% respectively. The higher efficiency of SPSGOD3 is resulting from higher values of open circuit voltage (V-oc) and fill factor (FF). (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：581 / 587

页数：7

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