Application of self-assembling photosynthetic dye for organic photovoltaics

被引：10
作者：
Tange, Ryu [1 ]
Inai, Koji [1 ]
Sagawa, Takashi [1 ]
Yoshikawa, Susumu [1 ,2 ]
机构：
[1] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan
[2] Japan Sci Technol Agcy JST, CREST, Kyoto 6110011, Japan
来源：
JOURNAL OF MATERIALS RESEARCH | 2011年 / 26卷 / 02期
关键词：
BACTERIUM CHLOROBIUM-TEPIDUM; OPEN-CIRCUIT VOLTAGE; SOLAR-CELLS; BACTERIOCHLOROPHYLL-C; CONVERSION EFFICIENCY; ORGANIZATION; CHLOROSOMES; MIMICS;
D O I：
10.1557/jmr.2010.15
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have developed novel photovoltaic systems composed of the fullerene derivative (6,6)-phenyl C(61) butyric acid methyl ester as electron acceptor with a second functional organic molecule, in this case bacteriochlorophyll c, as the light-harvesting and photosensitizing part. It was found that heat treatment of a thin film of bacteriochlorophyll c altered the morphological states of the aggregates and conductivity of the thin film could be regulated through the annealing process. Blended fullerene derivative and bacteriochlorophyll c thin films were fabricated on the surface of an indium-tin oxide/poly(ethylene dioxythiophene) doped with polystyrene sulfonic acid substrate layer and their photovoltaic properties were characterized and evaluated. Formation of fullerene-coordinated bacteriochlorophyll c complex was confirmed by changes in the visible absorption spectra and by FTIR. Such complexation promoted generation of photocurrent in the region of the Q(y) band and the current density of the thin film increased. A maximum incident photon-to-current conversion efficiency of 5.1% was attained at 745 nm.
引用
收藏
页码：306 / 310
页数：5
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