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Issue 3, 2014
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Yttrium-substituted nanocrystalline TiO2 photoanodes for perovskite based heterojunction solar cells

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Abstract

We report the use of Y3+-substituted TiO2 (0.5%Y–TiO2) in solid-state mesoscopic solar cells, consisting of CH3NH3PbI3 as the light harvester and spiro-OMeTAD as the hole transport material. A power conversion efficiency of 11.2% under simulated AM 1.5 full sun illumination was measured. A 15% improvement in the short-circuit current density was obtained compared with pure TiO2, due to the effect of Y3+ on the dimensions of perovskite nanoparticles formed on the semiconductor surface, showing that the surface modification of the semiconductor is an effective way to improve the light harvesters' morphology and electron transfer properties in the solid-state mesoscopic solar cells.

Graphical abstract: Yttrium-substituted nanocrystalline TiO2 photoanodes for perovskite based heterojunction solar cells

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Article information


Submitted
05 Nov 2013
Accepted
05 Nov 2013
First published
06 Nov 2013

Nanoscale, 2014,6, 1508-1514
Article type
Paper

Yttrium-substituted nanocrystalline TiO2 photoanodes for perovskite based heterojunction solar cells

P. Qin, A. L. Domanski, A. K. Chandiran, R. Berger, H. Butt, M. I. Dar, T. Moehl, N. Tetreault, P. Gao, S. Ahmad, M. K. Nazeeruddin and M. Grätzel, Nanoscale, 2014, 6, 1508
DOI: 10.1039/C3NR05884K

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