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Stable Inverted Small Molecular Organic Solar Cells Using a P-Doped Optical Spacer

Stable Inverted Small Molecular Organic Solar Cells Using a P-Doped Optical Spacer

Sang-Hoon Lee, Ji-Won Seo, Jung-Yong Lee

Nanoscale. 2015 Jan 7;7(1):157-65.

PMID: 25407588

Abstract:

We report inverted small molecular organic solar cells using a doped window layer as an optical spacer. The optical spacer was used to shift the optical field distribution inside the active layers, generating more charge carriers from sunlight. In this report, N,N,N',N'-tetrakis(4-methoxyphenyl)-benzidine (MeO-TPD) was doped with 2,2-(perfluoronaphthalene-2,6-diylidene)dimalononitrile (F6-TCNNQ), a p-type dopant material. P-doped MeO-TPD was adopted as an optical spacer because it has a large energy band gap, and its conductivity can be increased by several orders of magnitude through a doping process. As a result, a power conversion efficiency of 4.15% was achieved with the doped window layer of optimized thickness. Lastly, we present significantly improved stability of the inverted devices with the MeO-TPD layer.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP122738210	N,N,N′,N′-Tetrakis(4-methoxyphenyl)benzidine		122738-21-0	Price

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