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Effect of Perovskite Overlayers on TiO2 Electrodes in Perovskite-Sensitized Solar Cells

Title
Effect of Perovskite Overlayers on TiO2 Electrodes in Perovskite-Sensitized Solar Cells
Authors
Kim, Kang-PilKim, Jeong-HwaHwang, Dae-Kue
DGIST Authors
Kim, Kang-PilHwang, Dae-Kue
Issue Date
2016-05
Citation
Journal of Nanoscience and Nanotechnology, 16(5), 5305-5307
Type
Article
Article Type
Article
Keywords
Cell EfficiencyEfficiencyElectrodesExposed toMesoporous TiOOverlayer ThicknessOverlayersPbi2 ConcentrationPerovskitePerovskite OverlayerPerovskite Solar CellsSensitized Solar CellsSolar Cell StructuresSolar CellsSolution ConcentrationTitanium Dioxide
ISSN
1533-4880
Abstract
In this paper, we have studied the effect of the thickness of a CH3NH3PbI3 perovskite overlayer on mesoporous TiO2 electrodes in perovskite solar cells. The overlayers were prepared by spin coating PbI2 films on the electrodes, which were subsequently exposed to a CH3NH3I/2-propanol solution. We controlled the thickness of the perovskite overlayer by changing the PbI2 solution concentration. The thicknesses of the overlayers spin-coated from 0.5, 0.75, 0.9, and 1 M PbI2 solutions were approximately 179, 262, 316, and 341 nm, respectively. Perovskite solar cells with an approximately 316-nm-thick overlayer showed the highest efficiency of 9.11%. We conclude that optimization of the perovskite overlayer thickness in the solar cell structure is necessary to improve the cell efficiency. Copyright © 2016 American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/5106
DOI
10.1166/jnn.2016.12221
Publisher
American Scientific Publishers
Related Researcher
Files:
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Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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