Room-temperature epitaxy of α-CH3NH3PbI3 halide perovskite by pulsed laser deposition

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00639322" target="_blank" >RIV/68378271:_____/25:00639322 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1038/s44160-024-00717-z" target="_blank" >https://doi.org/10.1038/s44160-024-00717-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s44160-024-00717-z" target="_blank" >10.1038/s44160-024-00717-z</a>

Result language
angličtina
Original language name
Room-temperature epitaxy of α-CH3NH3PbI3 halide perovskite by pulsed laser deposition
Original language description
Epitaxial growth on lattice-(mis)matched substrates has advanced the understanding of semiconductors and enabled high-end technologies such as III-V-based light-emitting diodes. However, for metal halide perovskites, there is a knowledge gap in thin film heteroepitaxial growth, hindering progress towards new applications. Here we demonstrate the epitaxial growth of cubic (α)-CH3NH3PbI3 films on lattice-matched KCl substrates by pulsed laser deposition at room temperature. Epitaxial stabilization of α-CH3NH3PbI3 is confirmed via reciprocal space mapping, X-ray diffraction pole figures, electron backscatter diffraction and photoluminescence. A bandgap of 1.66 eV stable for over 300 days and Urbach energies of 12.3 meV for 15-nm-thick films are demonstrated. The impact of strain on α-phase stabilization is corroborated by first-principles density functional theory calculations, which also predict substantial bandgap tunability. This work demonstrates the potential of pulsed laser deposition for vapour-phase heteroepitaxial growth of metal halide perovskites, inspiring studies to unlock novel functionalities.
Czech name
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Czech description
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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
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
<a href="/en/project/LM2023051" target="_blank" >LM2023051: Research infrastructure CzechNanoLab</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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