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. 2015 Nov;27(42):6722-7.
doi: 10.1002/adma.201503446. Epub 2015 Sep 28.

Chemical Vapor Deposition of Large-Sized Hexagonal WSe₂ Crystals on Dielectric Substrates

Jianyi Chen  1 , Bo Liu  1 , Yanpeng Liu  1 , Wei Tang  1 , Chang Tai Nai  1 , Linjun Li  1 , Jian Zheng  1 , Libo Gao  1 , Yi Zheng  1 , Hyun Suk Shin  2 , Hu Young Jeong  2 , Kian Ping Loh  1
Affiliations

Chemical Vapor Deposition of Large-Sized Hexagonal WSe₂ Crystals on Dielectric Substrates

Jianyi Chen et al. Adv Mater. 2015 Nov.

Abstract

High-quality large-sized hexagoal WSe2 crystals can be grown on dielectric substrates using atmospheric chemical vapor deposition in the presence of hydrogen gas. These hexagonal crystals (lateral width >160 um) have a carrier mobility of 100 cm(2) V(-1) s(-1) and a photoresponsivity of ≈1100 mA W(-1), which is comparable to that of exfoliated flakes.

Keywords: hexagonal crystals; transition metal dichalcogenides; tungsten diselenide.

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