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Issue 17, 2015
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Inverted perovskite solar cells with inserted cross-linked electron-blocking interlayers for performance enhancement

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Abstract

Perovskite solar cells fabricated via a solution process have drawn great attention due to their high power conversion efficiency (PCE). Here, we report cross-linked anode interlayers with solvent-resistance that reduce electron–hole recombination by blocking electrons for inverted type solution processed perovskite solar cells. The cross-linkable materials used are (N,N′-bis(4-(6-((3-ethyloxetan-3-yl)methoxy)-hexyloxy)phenyl)-N,N′-bis(4-methoxyphenyl)biphenyl-4,4′-diamine (QUPD) and N,N′-bis(4-(6-((3-ethyloxetan-3-yl)methoxy))-hexylphenyl)-N,N′-diphenyl-4,4′-diamine (OTPD)), which can be cross-linked in the presence of acid groups provided by diffusion from the underlying PEDOT:PSS layer. The resulting PCE shows an improvement from 9.93% (control device) to 13.06% (cross-linked QUPD (X-QUPD)) by about 3% under AM 1.5G 100 mW cm−2 illumination, which demonstrates that the introduction of cross-linked electron blocking interlayers is a promising way to enhance the performance of inverted type solution processed perovskite solar cells.

Graphical abstract: Inverted perovskite solar cells with inserted cross-linked electron-blocking interlayers for performance enhancement

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Supplementary files

Article information


Submitted
25 Feb 2015
Accepted
17 Mar 2015
First published
18 Mar 2015

J. Mater. Chem. A, 2015,3, 9291-9297
Article type
Paper

Inverted perovskite solar cells with inserted cross-linked electron-blocking interlayers for performance enhancement

H. Jhuo, P. Yeh, S. Liao, Y. Li, S. Sharma and S. Chen, J. Mater. Chem. A, 2015, 3, 9291
DOI: 10.1039/C5TA01479D

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