High-Performance Organic Photovoltaic Devices Using a New Amorphous Molecular Material with High Hole Drift Mobility, Tris[4-(5-phenylthiophen-2-yl)phenyl]amine

被引:46
作者
Kageyama, Hiroshi [1 ]
Ohishi, Hitoshi [1 ]
Tanaka, Masatake [1 ]
Ohmori, Yutaka [3 ]
Shirota, Yasuhiko [2 ]
机构
[1] Osaka Univ, Dept Appl Chem, Fac Engn, Suita, Osaka 5650871, Japan
[2] Fukui Univ Technol, Dept Environm & Biol Chem, Fukui 9108505, Japan
[3] Osaka Univ, Ctr Adv Sci & Innovat, Suita, Osaka 5650871, Japan
关键词
SOLAR-CELLS; CHARGE-TRANSPORT; PHOTOELECTRICAL CONVERSION; CONJUGATED SYSTEMS; POLYMER; EFFICIENT; DONOR; HETEROJUNCTIONS; SOLIDS; PHTHALOCYANINE;
D O I
10.1002/adfm.200901259
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A new amorphous molecular material, tris[4-(5-phenylthiophen-2-yl)phenyl]amine (TPTPA), is synthesized and characterized. TPTPA forms a stable amorphous glass with a glass-transition temperature of 83 degrees C when the melt sample is cooled. It also forms amorphous thin films by a thermal deposition technique. TPTPA exhibits a hole drift mobility of 1.0 x 10(-2) cm(2) V-1 s(-1) at an electric field of 1.0 x 10(5) V cm(-1) and at 293 K, as determined by the time-of-flight method, which is of the highest level among those of amorphous molecular materials. pn-Heterojunction organic photovoltaic devices (OPVs) using TPTPA as an electron donor and C-60 or C-70 as an electron acceptor exhibit high performance with fill factors of 0.66 similar to 0.71 and power conversion efficiencies of 1.7 similar to 2.2% under air-mass (AM) 1.5G illumination at an intensity of 100 mW cm(-2), which are of the highest level ever reported for OPVs using amorphous molecular materials.
引用
收藏
页码:3948 / 3955
页数:8
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