Cited by 115Perovskite Materials and ApplicationsOrganic Electronics and PhotovoltaicsFerroelectric and Piezoelectric Materials

The DOI matches its Crossref record; 53 of the 53 references it cites were found in a registry or an index.

Control over Crystal Size in Vapor Deposited Metal-Halide Perovskite Films

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Abstract

Understanding and controlling grain growth in metal halide perovskite polycrystalline thin films is an important step in improving the performance of perovskite solar cells. We demonstrate accurate control of crystallite size in CH3NH3PbI3 thin films by regulating substrate temperature during vacuum co-deposition of inorganic (PbI2) and organic (CH3NH3I) precursors. Films co-deposited onto a cold (−2 °C) substrate exhibited large, micrometer-sized crystal grains, while films that formed at room temperature (23 °C) only produced grains of 100 nm extent. We isolated the effects of substrate temperature on crystal growth by developing a new method to control sublimation of the organic precursor, and CH3NH3PbI3 solar cells deposited in this way yielded a power conversion efficiency of up to 18.2%. Furthermore, we found substrate temperature directly affects the adsorption rate of CH3NH3I, thus impacting crystal formation and hence solar cell device performance via changes to the conversion rate of PbI2 to CH3NH3PbI3 and stoichiometry. These findings offer new routes to developing efficient solar cells through reproducible control of crystal morphology and composition.

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Crossref · 10.1021/acsenergylett.0c00183

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  1. Oxford PV perovskite solar cell achieves 28% efficiency. Oxford PV, 2018; https://www.oxfordpv.com/news/oxford-pv-perovskite-solar-cell-achieves-28-efficiency.

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Metadata

Authors
Lohmann, K. B., Patel, J. B., Rothmann, M. U., Xia, C. Q., Oliver, R. D. J., Herz, L. M., Snaith, H. J., & Johnston, M. B.
Affiliations
University of Oxford (GB)
Corresponding author
Johnston, Michael B.
Venue
ACS Energy Letters
Published
2020-02-04
Volume
5
Issue
3
Pages
710-717
ISSN
2380-8195 (ISSN-L)
OpenAlex
W3004566220
Cited by
113
References
53
Citations by year
2026: 11 · 2025: 15 · 2024: 16 · 2023: 25 · 2022: 17 · 2021: 16 · 2020: 13
FWCI
5.98
Type
journal article
Language
en
Open access
Locations
  • ACS Energy Letters (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Oxford University Research Archive (ORA) (University of Oxford) (submittedVersion, cc-by)
Funders
  • Alexander von Humboldt-Stiftung (NA)
  • Engineering and Physical Sciences Research Council (EP/P006329/1, EP/P033229/1)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Perovskite Materials and Applications
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
  • Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
Keywords
halide perovskites, methylammonium lead iodide, perovskite solar cells, grain size control, substrate temperature, co-deposition, vapor deposition, precursor adsorption, crystal growth, stoichiometry, crystal morphology

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