Journal article
Two-step spin-coating of vacancy-ordered double perovskites enables growth of thin films for electronic devices
Journal of materials chemistry. C, Materials for optical and electronic devices, v 13, pp 11402-11412
2025
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Vacancy-ordered double perovskites (VODPs), such as Cs2TeX6 (X = Cl, Br, I), are lead-free alternatives to conventional metal-halide perovskites (MHPs). One limitation of VODPs is the lack of processes to form thin films relevant for physical characterization and electronic devices. A two-step spin-coating method was developed for synthesizing high-quality films of Cs2TeBr6. Independently depositing CsBr and TeBr4 enables high precursor concentrations and control over crystallization kinetics. By optimizing the spin-coating parameters, conversion of precursors to phase pure films was observed using structural and surface characterization methods. The growth of mixed-halide systems was investigated using alternative salts including CsCl and CsI. The formation of halide alloys was found to depend on the existence of routes to byproducts. Lastly, single carrier diodes of Cs2TeBr6 were designed following valence band characterization with photoelectron spectroscopy. Temperature-dependent space-charge-limited current measurements revealed that transport occurs by hopping and the hole mobility is 3.2 x 10-5 cm2 V-1 s-1 near room temperature. The insights from the 2-step procedure provide a pathway towards making semiconducting devices from VODPs.
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Details
- Title
- Two-step spin-coating of vacancy-ordered double perovskites enables growth of thin films for electronic devices
- Creators
- Owen Kuklinski - University of California, Santa BarbaraAlexandra Brumberg - University of California, Santa BarbaraLinjing Tang - University of California, Santa BarbaraAnya S. Mulligan - Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USATim Kodalle - Lawrence Berkeley National LaboratoryCarolin M. Sutter-Fella - Lawrence Berkeley National LaboratoryRam Seshadri - University of California, Santa BarbaraMichael L. Chabinyc - University of California, Santa Barbara
- Publication Details
- Journal of materials chemistry. C, Materials for optical and electronic devices, v 13, pp 11402-11412
- Publisher
- Royal Society of Chemistry
- Number of pages
- 11
- Grant note
- NSF DMR-2308708 / National Science Foundation (NSF) Materials Research Science and Engineering Center (MRSEC); National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) DE-AC02-76SF00515 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) DE-SC0024422; DE-AC02-05CH11231; DMR-2308708 / Army Research Office 66886LSRIP; CNS-1725797 / DoD ARO DURIP DE-AC02-05CH11231 / Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy; United States Department of Energy (DOE) DE-SC0024422 / U. S. Department of Energy, Office of Science, Basic Energy Sciences; United States Department of Energy (DOE) CNS-1725797 / National Science Foundation; National Science Foundation (NSF) NSF DMR-2308708 / California NanoSystems Institute
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:001485246900001
- Scopus ID
- 2-s2.0-105005280845
- Other Identifier
- 991022053795404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied