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Issue 24, 2016
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Low thermal budget, photonic-cured compact TiO2 layers for high-efficiency perovskite solar cells

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Abstract

Rapid advances in organometallic trihalide perovskite solar cells (PSCs) have positioned them to be one of the leading next generation photovoltaic technologies. However, most of the high-performance PSCs, particularly those using compact TiO2 as an electron transport layer, require a high-temperature sintering step, which is not compatible with flexible polymer-based substrates. Considering the materials of interest for PSCs and corresponding device configurations, it is technologically imperative to fabricate high-efficiency cells at low thermal budget so that they can be realized on low-temperature plastic substrates. We report on a new photonic curing technique that produces crystalline anatase-phase TiO2 films on indium tin oxide-coated glass and flexible polyethylene terephthalate (PET) substrates. The planar PSCs, using photonic-cured TiO2 films, exhibit PCEs as high as 15.0% and 11.2% on glass and flexible PET substrates, respectively, comparable to the device performance of PSCs incorporating furnace annealed TiO2 films.

Graphical abstract: Low thermal budget, photonic-cured compact TiO2 layers for high-efficiency perovskite solar cells

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Supplementary files

Article information


Submitted
11 Mar 2016
Accepted
24 May 2016
First published
25 May 2016

J. Mater. Chem. A, 2016,4, 9685-9690
Article type
Paper

Low thermal budget, photonic-cured compact TiO2 layers for high-efficiency perovskite solar cells

S. Das, G. Gu, P. C. Joshi, B. Yang, T. Aytug, C. M. Rouleau, D. B. Geohegan and K. Xiao, J. Mater. Chem. A, 2016, 4, 9685
DOI: 10.1039/C6TA02105K

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