Issue 3, 2021

In situ growth of an opal-like TiO2 electron transport layer by atomic layer deposition for perovskite solar cells

Abstract

An orderly-arranged photonic crystal structure can produce a trapping effect to improve light utilization. Herein, an atomic layer deposition system and different sizes of polystyrene colloidal spheres were employed to in situ prepare an opal-like titanium oxide (TiO2) mesoporous electron transport layer for perovskite solar cells. Initially, a TiO2 layer was deposited on the spheres through an atomic layer deposition (ALD) system, and then the substrates were annealed to obtain hollow opal-like TiO2 structures. The as-prepared perovskite solar cells with the controlled opal-like TiO2 electron transport layer show an average power conversion efficiency (PCE) of 17.5 ± 0.55, and the same ALD-prepared planar solar cells show an average PCE of 14.9 ± 0.53. This work reveals that the opal-like nanostructure offers an efficient approach to high-performance perovskite solar cells.

Graphical abstract: In situ growth of an opal-like TiO2 electron transport layer by atomic layer deposition for perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
19 Oct 2020
Accepted
23 Dec 2020
First published
23 Dec 2020

Sustainable Energy Fuels, 2021,5, 880-885

In situ growth of an opal-like TiO2 electron transport layer by atomic layer deposition for perovskite solar cells

H. Lu, B. Gu and S. Fang, Sustainable Energy Fuels, 2021, 5, 880 DOI: 10.1039/D0SE01558J

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