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Photo-annealed amorphous titanium oxide for perovskite solar cells

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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

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Publication details

The article was received on 08 Jul 2019, accepted on 24 Aug 2019 and first published on 26 Aug 2019


Article type: Paper
DOI: 10.1039/C9NR05776E
Nanoscale, 2019, Advance Article

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    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, Advance Article , DOI: 10.1039/C9NR05776E

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