期刊
JOURNAL OF MATERIALS SCIENCE
卷 47, 期 14, 页码 5529-5534出版社
SPRINGER
DOI: 10.1007/s10853-012-6445-8
关键词
-
资金
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2011-0031400]
We grew modulated BeZnO layers by hybrid plasma-assisted molecular-beam epitaxy/electron-beam deposition. A wide band-gap investigation of the modulated Be (x) Zn1-x O by means of photocurrent (PC) spectroscopy was conducted. The band-gap energy was directly acquired from the wavelength of the PC peak, caused by the band-to-band transition. By increasing x, which was the rate of the Be elements, the optical band-gap energy was empirically fitted by E (BeZnO)(x) = 6.32(x-1)x + 7.305x + 3.295. We expect that this finding can open new possibilities for wide band-gap engineering of BeZnO layers, which can be utilized as barrier layers in active layers consisting of ZnO/BeZnO quantum well structures and solar-blind ultraviolet photodetectors.
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