High-performance organic solar cells based on a low-bandgap poly-thienothiophene-benzodithiophene polymer and fullerene composite prepared by using the airbrush spray-coating technique

被引：27

作者：

Kumar, Palanisamy ^{[1
]}

Kannappan, Santhakumar ^{[1
]}

Ochiai, Shizuyasu ^{[1
]}

Shin, Paik-Kyun ^{[2
]}

机构：

[1] Aichi Inst Technol, Dept Elect Engn, Toyota 4700392, Japan

[2] Inha Univ, Sch Elect Engn, Inchon 402751, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2013年 / 62卷 / 08期

关键词：

Organic solar cell; Bulk heterojunction; Spray coating; PTB7; PC71BM; PHASE-SEPARATION; EFFICIENCY; MORPHOLOGY; ADDITIVES;

D O I：

10.3938/jkps.62.1169

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In the present work, we have demonstrated high-performance organic solar cells with spray coated active layers. The influence of the nanomorphology on the power conversion efficiency of poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl] [3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno[3,4-b]thiophenediyl]] (PTB7):[6,6]-phenyl-C71-butyric acid (PC71BM) methyl ester bulk heterojunction solar cells is presented. Active layers were prepared using a chlorobenzene solvent containing a small volume of 1,8-diiodooctane as an additive by spray coating with conventional handheld airbrushes. The surface morphology of the active layers deposited for various spray-coating times was examined using atomic force microscopy. The resulting devices were measured under AM 1.5G (100 mW/cm(2)) conditions in an ambient atmosphere. The optimized spray-coated PTB7:PC71BM film showed a high solar cell performance with a short-circuit current density of 14.20 +/- 0.41 mA/cm(2), a fill factor of 56.00 +/- 0.02% and a power conversion efficiency of 5.96 +/- 0.15%.

引用

页码：1169 / 1175

页数：7