Bimolecular recombination coefficient calculation by in situ potentiometry in a bulk heterojunction organic photovoltaic material

被引：6

作者：

Danielson, Eric ^{[1
,2
]}

Ooi, Zi-En ^{[3
]}

Lombardo, Christopher J. ^{[1
,4
]}

Dodabalapur, Ananth ^{[1
,2
,4
]}

机构：

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

[2] Univ Texas Austin, Mat Sci & Engn Program, Austin, TX 78712 USA

[3] ASTAR, IMRE, Singapore 117602, Singapore

[4] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78712 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 102卷 / 17期

关键词：

POLYMER SOLAR-CELLS;

D O I：

10.1063/1.4803512

中图分类号：

O59 [应用物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Polymer fullerene bulk heterojunction (BHJ) systems are an important class of active materials; however, charge transport and recombination mechanisms in these materials are not yet completely understood. We use lateral bulk heterojunction devices to perform in situ potentiometry on the BHJ system P3HT:PCBM. From current vs. voltage measurements performed at different light intensities, we provide evidence that the recombination mechanism in this material is bimolecular. The potential profile of the device channel is also constructed from these measurements, which is then used to determine the mobility of both charge carriers and calculate the bimolecular recombination coefficient. (C) 2013 AIP Publishing LLC.

引用

页数：4

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