Simple tandem organic photovoltaic cells for improved energy conversion efficiency

被引：52

作者：

Zhang, Chunfu ^{[1
]}

Tong, Shi Wun ^{[1
]}

Jiang, Changyun ^{[2
]}

Kang, E. T. ^{[3
]}

Chan, D. S. H. ^{[1
]}

Zhu, Chunxiang ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

[2] Inst Microelect, Singapore 117685, Singapore

[3] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117576, Singapore

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 08期

关键词：

D O I：

10.1063/1.2885721

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We proposed and demonstrated a simple tandem structure of organic photovoltaic (PV) cell for efficient light harvesting. In this device structure, a soluble fullerene derivative of [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM) is employed simultaneously to form a bilayer heterojunction PV subcell with the underlying copper phthalocyanine (CuPc) and a bulk heterojunction PV subcell with blended poly(3-hexylthiophene-2,5-diyl) (P3HT). In comparison with the conventional tandem structure, the omission of the semitransparent intercellular connection layer reduces the complexity of the device and the light loss. The enhanced short circuit current density (J(SC)=8.63 mA/cm(2)) and power conversion efficiency (PCE) (2.79%) of the tandem structure are nearly the sum of those of the stand-alone cells of CuPe/PCBM (J(SC)=2.09 mA/cm(2), PCE=0.43%) and P3HT:PCBM (J(SC) =6.87 mA/cm(2) PCE=2.50%). (c) 2008 American Institute of Physics.

引用

页数：3

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