Alkyl Substituent Length Dependence of Octaalkylphthalocyanine Bulk Heterojunction Solar Cells

被引：21

作者：

Dao, Quang-Duy ^{[1
]}

Saito, Takashi ^{[1
]}

Nakano, Shohei ^{[1
]}

Fukui, Hitoshi ^{[1
]}

Kamikado, Toshiya ^{[1
]}

Fujii, Akihiko ^{[1
]}

Shimizu, Yo ^{[2
]}

Ozaki, Masanori ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Div Elect Elect & Informat Engn, Suita, Osaka 5650871, Japan

[2] Natl Inst Adv Ind Sci & Technol, Kansai Ctr, Res Inst Ubiquitous Energy Devices, Ikeda, Osaka 5638577, Japan

来源：

APPLIED PHYSICS EXPRESS | 2013年 / 6卷 / 12期

基金：

日本科学技术振兴机构;

关键词：

OPEN-CIRCUIT VOLTAGE; CONDUCTING POLYMER; BUCKMINSTERFULLERENE; PHTHALOCYANINE; LUMINESCENCE;

D O I：

10.7567/APEX.6.122301

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Alkyl substituent length dependences of photovoltaic performance of bulk-heterojunction (BHJ) organic solar cells (OSCs) utilizing 1,4,8,11,15,18,22,25-octaalkylphthalocyanine (CnPcH(2)) mixed in [6,6]-phenyl C-71 butyric acid methyl ester have been studied. By shortening the alkyl substituents, stacking of the discotic CnPcH(2) columns is probably changed from 2D rectangular lattices to pseudohexagonal structures, and Davydov splitting at the Q-band of CnPcH(2) absorbance spectra decreases, which results in the higher hole mobility and the deeper highest occupied molecular orbital energy levels. As a result, the power conversion efficiencies of CnPcH(2)-based BHJ OSCs are improved from 0.3 to 3.7% by changing the alky substituent length. (C) 2013 The Japan Society of Applied Physics

引用

页数：4

共 21 条

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