Accurate spectral response measurements of a complementary absorbing organic tandem cell with fill factor exceeding the subcells

被引：17

作者：

Cheyns, David ^{[1
]}

Kim, Minjae ^{[1
,2
]}

Verreet, Bregt ^{[1
,3
,4
]}

Rand, Barry P. ^{[1
,3
,4
]}

机构：

[1] IMEC, B-3001 Louvain, Belgium

[2] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA

[3] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[4] Princeton Univ, Andlinger Ctr Energy & Environm, Princeton, NJ 08544 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 09期

关键词：

SOLAR-CELLS; EFFICIENCY;

D O I：

10.1063/1.4867261

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single heterojunction organic photovoltaic cells based on co-evaporated donor-acceptor layers with power conversion efficiencies (eta) above 5.5% are demonstrated, using either high (1.8 eV) or low (1.4 eV) optical gap materials. The high energy absorbing cell utilizes a high fullerene-C-70 content, in combination with a high mobility amorphous donor, while the low energy absorbing cell consists of a donor-acceptor molecule paired with C-60 as the acceptor. The integration of the two cells in an optimized tandem configuration leads to eta = 7.2%, verified by external quantum efficiency measurements of the subcells. Notably, the fill-factor of the tandem stack is higher than either one of the sub-cells. (C) 2014 AIP Publishing LLC.

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页数：4

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