Realization of BaZrS3 chalcogenide perovskite thin films for optoelectronics
- State Univ. of New York (SUNY), Buffalo, NY (United States)
- Taiyuan Normal Univ. (China)
- Southern Univ. of Science & Technology, Shenzhen (China)
- Xi'an Jiaotong Univ. (China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Chinese Academy of Sciences (CAS), Shanghai (China)
- Rensselaer Polytechnic Inst., Troy, NY (United States)
BaZrS3 is a prototypical chalcogenide perovskite, an emerging class of unconventional semiconductor. Recent results on powder samples reveal that it is a material with a direct band gap of 1.7–1.8 eV, a very strong light-matter interaction, and a high chemical stability. Due to the lack of quality thin films, however, many fundamental properties of chalcogenide perovskites remain unknown, hindering their applications in optoelectronics. In this work, we report the fabrication of BaZrS3 thin films, by sulfurization of oxide films deposited by pulsed laser deposition. We show that these films are n-type with carrier densities in the range of 1019-1020 cm-3. Depending on the processing temperature, the Hall mobility ranges from 2.1 to 13.7 cm2/Vs. The absorption coefficient is > 105 cm-1 at photon energy >1.97 eV. Temperature dependent conductivity measurements suggest shallow donor levels. By assuring that BaZrS3 is a promising candidate, these results potentially unleash the family of chalcogenide perovskites for optoelectronics such as photodetectors, photovoltaics, and light emitting diodes.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); Natural Science Foundation of China (NSFC); USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- 89233218CNA000001; EE0007364
- OSTI ID:
- 1648108
- Alternate ID(s):
- OSTI ID: 1694277
- Report Number(s):
- LA-UR--20-24151
- Journal Information:
- Nano Energy, Journal Name: Nano Energy Vol. 68; ISSN 2211-2855
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Chalcogenide perovskite BaZrS3 thin-film electronic and optoelectronic devices by low temperature processing
Epitaxial Thin Films of a Chalcogenide Perovskite
Journal Article
·
Fri Mar 05 19:00:00 EST 2021
· Nano Energy
·
OSTI ID:1848516
Epitaxial Thin Films of a Chalcogenide Perovskite
Journal Article
·
Sun Sep 12 20:00:00 EDT 2021
· Chemistry of Materials
·
OSTI ID:1827596