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Title: Pathway to oxide photovoltaics via band-structure engineering of SnO

Journal Article · · APL Materials
DOI:https://doi.org/10.1063/1.4963661· OSTI ID:1328528

All-oxide photovoltaics could open rapidly scalable manufacturing routes, if only oxide materials with suitable electronic and optical properties were developed. SnO has exceptional doping and transport properties among oxides, but suffers from a strongly indirect band gap. Here, we address this shortcoming by band-structure engineering through isovalent but heterostructural alloying with divalent cations (Mg, Ca, Sr, and Zn). Furthermore, using first-principles calculations, we show that suitable band gaps and optical properties close to that of direct semiconductors are achievable, while the comparatively small effective masses are preserved in the alloys. Initial thin film synthesis and characterization support the feasibility of the approach.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1328528
Alternate ID(s):
OSTI ID: 1329527; OSTI ID: 1420533
Report Number(s):
NREL/JA-5K00-67309
Journal Information:
APL Materials, Journal Name: APL Materials Vol. 4 Journal Issue: 10; ISSN 2166-532X
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Ambipolar SnO x thin-film transistors achieved at high sputtering power journal April 2018

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