Epitaxial Zinc Stannate (Zn2SnO4) Thin Film for Solar Cells

Title
Epitaxial Zinc Stannate (Zn2SnO4) Thin Film for Solar Cells
Authors
채근화원성옥Nark-Eon SungHee Jun ShinIk-Jae Lee
Keywords
zinc Stannate; epitaxial thin film; rf sputter; solar cells; optical pump?THz probe spectroscopy; photocarrier; charge-carrier lifetime; Hall carrier mobility
Issue Date
2020-07
Publisher
ACS applied energy materials
Citation
VOL 3, NO 7-6059
Abstract
Epitaxial Zn2SnO4 thin films were fabricated using rf magnetron sputtering and characterized via X-ray diffraction (XRD) to investigate its structural behaviors. XRD measurements indicate high-quality single crystal films of (400) orientation. The growth follows cubic-to-cubic alignment with the epitaxial relationship of Zn2SnO4[001]//MgO[001] in the out-of-plane direction and Zn2SnO4[110]//MgO[110] in the in-plane direction. The Hall mobility of 88.5 ± 6.2 cm2 V?1 s?1 was achieved. The Zn2SnO4 films had average optical transmittance ≥90% and a band gap of 3.582 ± 0.082 eV. In the optical pump?THz probe spectroscopy result, a relatively longer charge-carrier lifetime, τl = 2158.89 ps, was achieved.
URI
http://pubs.kist.re.kr/handle/201004/72230
ISSN
2574-0962
Appears in Collections:
KIST Publication > Article
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