Interface and optical properties of Zn1-xMgxO films with Mg content of more than 70% grown on the (1$\bar{2}$10)-ZnO substrates

Liang, Xin; Zhou, Hua; Wang, Hui-Qiong; Zhang, Lihua; Kisslinger, Kim; Kang, Junyong

doi:10.1063/5.0048110

Title: Interface and optical properties of Zn_1-xMg_xO films with Mg content of more than 70% grown on the (1$$\bar{2}$$10)-ZnO substrates

Journal Article · Thu Jul 15 00:00:00 EDT 2021 · AIP Advances

DOI:https://doi.org/10.1063/5.0048110· OSTI ID:1822332

Liang, Xin ^[1]; Zhou, Hua ^[2];

^[3]; Zhang, Lihua ^[4]; Kisslinger, Kim ^[4]; Kang, Junyong ^[1]

Xiamen University, Xiamen (China)
Shandong Univ., Jinan (China)
Xiamen University, Xiamen (China); Xiamen University Malaysia, Sepang, Selangor (Malaysia)
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)

Fabricating Zn_1-xMgxO films with a high Mg content is key to their applications in deep-ultraviolet optoelectronic devices. In this work, we report the preparation of Zn1-xMgxO films on ($$1\bar{2}10$$)-ZnO substrates by molecular beam epitaxy. The Zn_1-xMg_xO/($$1\bar{2}10$$)-ZnO structure is revealed by x-ray diffraction and high-resolution transmission electron microscopy. Remarkably, no cubic MgO is observed for films with 74.6% Mg content; the film shows mainly the wurtzite structure with some intermediate phases at the interface. Photoluminescence spectra show that the film exhibits good optoelectronic properties with a bandgap of 4.6 eV. This work provides a new avenue for the fabrication of deep-ultraviolet Zn_1-xMg_xO films.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012704

OSTI ID:: 1822332

Report Number(s):: BNL-222151-2021-JAAM; TRN: US2214599

Journal Information:: AIP Advances, Vol. 11, Issue 7; ISSN 2158-3226

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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