Enhanced external quantum efficiency in an organic photovoltaic cell via singlet fission exciton sensitizer

被引：95

作者：

Reusswig, P. D. ^{[1
]}

Congreve, D. N. ^{[1
]}

Thompson, N. J. ^{[2
]}

Baldo, M. A. ^{[1
]}

机构：

[1] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 11期

基金：

美国国家科学基金会;

关键词：

MAGNETIC-FIELD; CRYSTALS;

D O I：

10.1063/1.4752445

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate bilayer organic photovoltaic cells that incorporate a singlet exciton fission sensitizer layer to increase the external quantum efficiency (EQE). This solar cell architecture is realized by pairing the singlet exciton donor layer tris[4-(5-phenylthiophen-2-yl)phenyl]amine (TPTPA) with the singlet exciton fission layer 5,6,11,12-tetraphenylnaphthacene (rubrene). The presence of the rubrene layer at the donor-acceptor interface allows for a singlet generated in TPTPA to undergo singlet exciton fission with a corresponding doubling in the TPTPA EQE from 12.8% to 27.6%. This scheme de-couples singlet exciton fission from photon absorption, exciton diffusion, and charge transport for very high EQE organic photovoltaic cells. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4752445]

引用

页数：4

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