Bulk-heterojunction photovoltaic devices based on donor-acceptor organic small molecule blends

被引：171

作者：

Gebeyehu, D ^{[1
]}

Maennig, B ^{[1
]}

Drechsel, J ^{[1
]}

Leo, K ^{[1
]}

Pfeiffer, M ^{[1
]}

机构：

[1] Tech Univ Dresden, Inst Angew Photophys, D-01062 Dresden, Germany

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2003年 / 79卷 / 01期

关键词：

organic solar cells; bulk heterojunction; donor/acceptor blend; vacuum coevaporation deposition; doped transport layers; metal/semiconductor interfaces;

D O I：

10.1016/S0927-0248(02)00369-0

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

We present a systematic study on photovoltaic devices that combine an organic small molecule photoactive donor-acceptor bulk heterojunction system with controlled doping of the charge transport layers. The doped transport layers are formed using high vacuum co-evaporation deposition technique (i.e. co-sublimation of matrix and dopant). Solar cell devices have been fabricated based on zinc-phthalocyanine (ZnPc) as donor (D) and fullerene (C-60) as electron acceptor (A) with doped charge transport layers. The cells show a short circuit current, I-sc = 1.5 mA/cm(2), an open circuit voltage, V-oc = 450 mV, a fill factor, FF = 0.5, and a power conversion efficiency, eta(e) = 3.37% under 1/10 sun (10 mW/cm(2)) white light illumination. In addition, these bulk-heterojunction photovoltaic devices were characterized under 1 sun (100 mW/cm(2)) white light illumination showing I-sc = 6.3 mA/cm(2), V-oc = 500 mV, and eta(e) = 1.04%. We have observed that the performance of such 'bulk-heterojunction' photovoltaic devices is critically dependent on the transport properties of the interpenetrating network D/A system and doped charge transport layers. (C) 2002 Elsevier B.V. All rights reserved.

引用

页码：81 / 92

页数：12

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