Issue 41, 2019

Photo-annealed amorphous titanium oxide for perovskite solar cells

Abstract

Electron selective layers are important to the efficiency, stability and hysteresis of perovskite solar cells. Photo-annealing is a low-cost, roll-to-roll-compatible process that can be applied to the post-treatment fabrication of sol–gel based metal oxide layers. Here, we fabricate an amorphous titanium oxide electron selective layer at a low temperature in a dry atmosphere using a UV light annealing system and compare it with a thermal annealing process. Active oxygen species are created by using UV light to promote hydrolysis and condense the TiO2 precursor, which removes organic ligands effectively. The photo-annealed TiO2-based perovskite solar cell has a power conversion efficiency of 19.37% without hysteresis.

Graphical abstract: Photo-annealed amorphous titanium oxide for perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
08 7月 2019
Accepted
24 8月 2019
First published
26 8月 2019

Nanoscale, 2019,11, 19488-19496

Photo-annealed amorphous titanium oxide for perovskite solar cells

J. B. Jeon, B. J. Kim, G. J. Bang, M. Kim, D. G. Lee, J. M. Lee, M. Lee, H. S. han, G. Boschloo, S. Lee and H. S. Jung, Nanoscale, 2019, 11, 19488 DOI: 10.1039/C9NR05776E

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