Issue 43, 2018, Issue in Progress

Formamidinium-based planar heterojunction perovskite solar cells with alkali carbonate-doped zinc oxide layer

Abstract

We herein demonstrate n-i-p-type planar heterojunction perovskite solar cells employing spin-coated ZnO nanoparticles modified with various alkali metal carbonates including Li2CO3, Na2CO3, K2CO3 and Cs2CO3, which can tune the energy band structure of ZnO ETLs. Since these metal carbonates doped on ZnO ETLs lead to deeper conduction bands in the ZnO ETLs, electrons are easily transported from the perovskite active layer to the cathode electrode. The power conversion efficiency of about 27% is improved due to the incorporation of alkali carbonates in ETLs. As alternatives to TiO2 and n-type metal oxides, electron transport materials consisting of doped ZnO nanoparticles are viable ETLs for efficient n-i-p planar heterojunction solar cells, and they can be used on flexible substrates via roll-to-roll processing.

Graphical abstract: Formamidinium-based planar heterojunction perovskite solar cells with alkali carbonate-doped zinc oxide layer

Supplementary files

Article information

Article type
Paper
Submitted
27 Mar 2018
Accepted
08 Jun 2018
First published
03 Jul 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 24110-24115

Formamidinium-based planar heterojunction perovskite solar cells with alkali carbonate-doped zinc oxide layer

J. Jeong, H. Kim, Y. J. Yoon, B. Walker, S. Song, J. Heo, S. Y. Park, J. W. Kim, G. Kim and J. Y. Kim, RSC Adv., 2018, 8, 24110 DOI: 10.1039/C8RA02637H

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