Semiconducting carbon nanotube/fullerene blended heterojunctions for photovoltaic near-infrared photon harvesting

被引：54
作者：
Bindl, Dominick J. [1 ]
Brewer, Adam S. [1 ]
Arnold, Michael S. [1 ]
机构：
[1] Univ Wisconsin, Dept Mat Sci & Engn, Madison, WI 53706 USA
来源：
NANO RESEARCH | 2011年 / 4卷 / 11期
基金：
美国国家科学基金会;
关键词：
Carbon nanotube; bulk heterojunction; photovoltaic; photodetector; near-infrared (NIR); SPECTRAL RESPONSE; SOLAR-CELLS; NANOTUBES; MORPHOLOGY; MOBILITY;
D O I：
10.1007/s12274-011-0167-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We demonstrate that the near-infrared (NIR) absorptivity of semiconducting single-walled carbon nanotubes (s-SWCNTs) can be harnessed in blended heterojunctions with the fullerene derivative [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM). Photogenerated charge separation is efficiently driven by the ultrahigh interfacial area of the blends and the favorable energy offsets between the two materials. NIR-sensitive photovoltaic and photodetector devices utilizing the stack (indium tin oxide/ca. 10 nm s-SWCNT:PCBM/100 nm C-60/10 nm 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP)/Ag) were fabricated with NIR power conversion efficiencies > 1.3% and peak, zero bias external quantum efficiency of 18% at lambda = 1205 nm.
引用
收藏
页码：1174 / 1179
页数：6
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