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Issue 9, 2014
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A dopant-free hole-transporting material for efficient and stable perovskite solar cells

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Abstract

An efficient pristine hole-transporting material (HTM), tetrathiafulvalene derivative (TTF-1), was introduced into perovskite solar cells, without the use of p-type dopants. As compared to cells based on well-known p-type doping with spiro-OMeTAD, perovskite solar cells based on dopant-free TTF-1 performed with a comparable efficiency of 11.03%; moreover, the stability of the dopant-free TTF-1 based cell was greatly improved two fold in air at a relative humidity of ∼40%. To the best of our knowledge, this is the first case of perovskite solar cells employing a dopant-free HTM based on a tetrathiafulvalene derivative yielding an efficiency over 11%. The present finding paves the way for the development of efficient dopant-free HTMs for perovskite solar cells, which promotes the advancement of cost-effective and practical perovskite solar cells.

Graphical abstract: A dopant-free hole-transporting material for efficient and stable perovskite solar cells

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Supplementary files

Article information


Submitted
23 May 2014
Accepted
24 Jun 2014
First published
24 Jun 2014

Energy Environ. Sci., 2014,7, 2963-2967
Article type
Communication
Author version available

A dopant-free hole-transporting material for efficient and stable perovskite solar cells

J. Liu, Y. Wu, C. Qin, X. Yang, T. Yasuda, A. Islam, K. Zhang, W. Peng, W. Chen and L. Han, Energy Environ. Sci., 2014, 7, 2963
DOI: 10.1039/C4EE01589D

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