Synthesis of Diketopyrrolopyrrole Containing Copolymers: A Study of Their Optical and Photovoltaic Properties

被引：113

作者：

Kanimozhi, Catherine ^{[2
]}

Balraju, P. ^{[1
]}

Sharma, G. D. ^{[1
,3
]}

Patil, Satish ^{[2
]}

机构：

[1] Jai Narain Vyas Univ, Dept Phys, Mol Elect & Optoelect Device Lab, Jodhpur 342005, Rajasthan, India

[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

[3] Jaipur Engn Coll, Jaipur, Rajasthan, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2010年 / 114卷 / 09期

关键词：

POLYMER SOLAR-CELLS; LOW-BAND-GAP; OPEN-CIRCUIT VOLTAGE; CONJUGATED POLYMERS; CHARGE-TRANSPORT; PHOTOCURRENT GENERATION; NANOSCALE MORPHOLOGY; HIGHLY LUMINESCENT; PERFORMANCE; DPP;

D O I：

10.1021/jp909183x

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：

The diketopyrrolopyrrole-based copolymers PDPP-BBT and TDPP-BBT were synthesized and used as a donor for bulk heterojunction photovoltaic devices. The photophysical properties of these polymers showed absorption in the range 500-600 nm with it maximum peak around 563 nm, while TDPP-BBT showed broadband absorption in the range 620 - 800 nm with a peak around 656 nm. The power conversion efficiencies (PCE) of the polymer solar cells based on these copolymers and [6,6]-phenyl C61 butyric acid methyl ester (PCBM) were 0.68% (as cast PDPP-BBT:PCBM), 1.51% (annealed PDPP-BBT:PCBM), 1.57% (as cast TDPP-BBT:PCBM), and 2.78% (annealed TDPP-BBT:PCBM), under illumination of AM 1.5 (100 mW/cm(2)). The higher PCE for TDPP-BBT-based polymer solar cells has been attributed to the low band gap of this copolymer as compared to PDPP-BBT, which increases the numbers of photogenerated excitons and corresponding photocurrent of the device. These results indicate that PDPP-BBT and TDPP-BBT act its excellent electron donors for bulk heterojunction devices.

引用

页码：3095 / 3103

页数：9

共 55 条

[1] High performance amorphous metallated π-conjugated polymers for field-effect transistors and polymer solar cells [J].