Single- vs dual-source vapor deposition of inorganic halide perovskites: A case study of CsPbBr<sub>3</sub>
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0198139" target="_blank" >RIV/00216305:26620/26:0198139 - isvavai.cz</a>
Result on the web
<a href="https://pubs.aip.org/aip/apm/article/13/3/031118/3340729/Single-vs-dual-source-vapor-deposition-of" target="_blank" >https://pubs.aip.org/aip/apm/article/13/3/031118/3340729/Single-vs-dual-source-vapor-deposition-of</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0242134" target="_blank" >10.1063/5.0242134</a>
Alternative languages
Result language
angličtina
Original language name
Single- vs dual-source vapor deposition of inorganic halide perovskites: A case study of CsPbBr<sub>3</sub>
Original language description
Inorganic halide perovskites have become attractive for many optoelectronic applications due to their outstanding properties. While chemical synthesis techniques have been successful in producing high-quality perovskite crystals, scaling up to wafer-scale thin films remains challenging. Vapor deposition methods, particularly physical vapor deposition and chemical vapor deposition, have emerged as potential solutions for large-scale thin film fabrication. However, the control of phase purity during deposition remains problematic. Here, we investigate single-source (CsPbBr3) and dual-source (CsBr and PbBr2) physical vapor deposition techniques with the aim of achieving phase-pure CsPbBr3 thin films. Utilizing Knudsen effusion mass spectrometry, we demonstrate that while the single-source CsPbBr3 evaporation is partially congruent, it leads to compositional changes in the evaporant over time. The dual-source evaporation, with a precise control of the PbBr2/CsBr flux ratio, can improve phase purity, particularly at elevated substrate temperatures under excess PbBr2 conditions. Our results give direct evidence that the growth is CsBr-limited. Overall, our findings provide critical insights into the vapor phase deposition processes, highlighting the importance of evaporation conditions in achieving the desired inorganic perovskite stoichiometry and morphology. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
<a href="/en/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Quantum materials for applications in sustainable technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
APL Materials
ISSN
2166-532X
e-ISSN
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Volume of the periodical
13
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
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UT code for WoS article
001457916400002
EID of the result in the Scopus database
2-s2.0-105001397829