Synthesis, thin-film morphology, and comparative study of bulk and bilayer heterojunction organic photovoltaic devices using soluble diketopyrrolopyrrole molecules

被引：37

作者：

Kylberg, William ^{[1
]}

Sonar, Prashant ^{[2
]}

Heier, Jakob ^{[1
]}

Tisserant, Jean-Nicolas ^{[1
]}

Muller, Christian ^{[4
]}

Nueesch, Frank ^{[1
]}

Chen, Zhi-Kuan ^{[2
]}

Dodabalapur, Ananth ^{[5
]}

Yoon, Songhak ^{[3
]}

Hany, Roland ^{[1
]}

机构：

[1] Empa, Swiss Fed Inst Mat Sci & Technol, Lab Funct Polymers, CH-8600 Dubendorf, Switzerland

[2] ASTAR, IMRE, Singapore 117602, Singapore

[3] Empa, Lab Solid State Chem & Catalysis, CH-8600 Dubendorf, Switzerland

[4] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden

[5] Univ Texas Austin, Microelect Res Ctr, Austin, TX 78758 USA

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2011年 / 4卷 / 09期

关键词：

CONJUGATED POLYMERS; SOLAR-CELLS; OLIGOTHIOPHENE DERIVATIVES; BANDGAP; SEMICONDUCTORS; COPOLYMER; ACCEPTOR; DONOR; UNITS; CORE;

D O I：

10.1039/c1ee01544c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Diketopyrrolopyrrole (DPP)-based organic semiconductors EH-DPP-TFP and EH-DPP-TFPV with branched ethyl-hexyl solubilizing alkyl chains and end capped with trifluoromethyl phenyl groups were designed and synthesized via Suzuki coupling. These compounds show intense absorptions up to 700 nm, and thin film-forming characteristics that sensitively depend on the solvent and coating conditions. Both materials have been used as electron donors in bulk heterojunction and bilayer organic photovoltaic (OPV) devices with fullerenes as acceptors and their performance has been studied in detail. The best power conversion efficiency of 3.3% under AM1.5G illumination (100 mW cm(-2)) was achieved for bilayer solar cells when EH-DPP-TFPV was used with C-60, after a thermal annealing step to induce dye aggregation and interdiffusion of C-60 with the donor material. To date, this is one of the highest efficiencies reported for simple bilayer OPV devices.

引用

页码：3617 / 3624

页数：8

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