期刊
OPTICS EXPRESS
卷 23, 期 10, 页码 13580-13586出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.013580
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- NUS Start-up Grants [R-263-000-B21-133, R-263-000-B21-731]
We report on the demonstration of photodetectors based on large scale two-dimensional molybdenum disulfide (MoS2) transition metal dichalcogenides. Excellent film uniformity and precise control of the MoS2 thickness down to a monolayer (similar to 0.75nm) were achieved by magnetron sputtering synthesis approach. In particular, the photodetectors integrated with five MoS2 monolayers exhibit a high photoresponsivity of 1.8 A/W, an external quantum efficiency exceeding 260%, and a photodetectivity of similar to 5 x 10(8) Jones for a wavelength of 850 nm, surpassing the performance of mechanically exfoliated based photodetectors. (C) 2015 Optical Society of America
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