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@unpublished{Calado:2019,
author = {Calado, P and Barnes, PRF},
publisher = {arXiv},
title = {Is it possible for a perovskite p-n homojunction to persist in the  presence of mobile ionic charge?},
url = {http://arxiv.org/abs/1905.11892v2},
year = {2019}
}

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TY  - UNPB
AB  - Recently Cui et al. reported on the fabrication a p-n homojunction perovskitesolar cell (PSC) using stoichiometric control of sequentially-depositedperovskite layers. The authors propose that the junction leads to an enhancedelectric field in the perovskite absorber resulting in improved chargeseparation. In this response to Cui et al. 2019 we show that the experimentaldata presented in the paper does not directly support this claim. Furthermore,Cui et al.'s thesis is not compatible with the large body of existingliterature showing that mobile ionic defects present in methyl-ammonium leadiodide (MAPI) and its derivatives are highly mobile at room temperature. Usingdrift diffusion device simulations we show that large densities of mobile ioniccharge in the system are likely to the screen any beneficial effects of a p-nhomojunction.
AU  - Calado,P
AU  - Barnes,PRF
PB  - arXiv
PY  - 2019///
TI  - Is it possible for a perovskite p-n homojunction to persist in the  presence of mobile ionic charge?
UR  - http://arxiv.org/abs/1905.11892v2
UR  - http://hdl.handle.net/10044/1/74163
ER  -

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