The influence of the polymer architecture on morphology and device properties of polymer bulk heterojunction photovoltaic cells

被引：8

作者：

Koetse, MM ^{[1
]}

Sweelssen, J ^{[1
]}

Franse, T ^{[1
]}

Veenstra, SC ^{[1
]}

Kroon, JM ^{[1
]}

Yang, X ^{[1
]}

Alexeev, A ^{[1
]}

Loos, J ^{[1
]}

Schubert, US ^{[1
]}

Schoo, HFM ^{[1
]}

机构：

[1] TNO Inst Ind Technol, NL-5600 HE Eindhoven, Netherlands

来源：

ORGANIC PHOTOVOLTAICS IV | 2004年 / 5215卷

关键词：

polymer solar cell; organic photovoltaics; synthesis; semiconducting polymers; AFM; TEM;

D O I：

10.1117/12.504513

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Polymer bulk hetero junction solar cells were made from poly(2-methoxy-5-(3,7-dimethyloctyloxy)-1,4-phenylene-vinylene) (MDMO-PPV) as donor and poly(cyanoetherphenylenevinylene) (PCNEPV) derivatives as acceptor material. In this paper we start out with discussing the synthesis of the materials. Subsequently, the main issues concerning the devices are treated. Annealing the devices yielded devices with encouraging efficiencies of 0.5% (1 sun, 100mW/cm(2)), as calculated from the maximum power points (MPP). AFM studies revealed that this anneal step improves especially the interface of the active layer with the under laying PEDOT:PSS, although mobility and morphology changes can not be ruled out. Lowering the molecular weight (Mw) of the MDMO-PPV gave a slight improvement of the device performance. Decreasing the Mw of the acceptor material, MDMO-PCNEPV (PCNEPV derivative with the same side chains as MDMO-PPV) and optimizing the layer thickness led to a device with an efficiency of 0.65%. Finally we looked into the influence of the nature of the side chains on the acceptor polymer. The results suggest that the closer the resemblance between donor and acceptor is the better the device performance.

引用

页码：119 / 128

页数：10

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