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Realizing thermal strain of patterned sapphire substrates dominate the bandgap-shifted of bilayer MoS2

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Abstract

Using thermal strain concept, we can tune the bandgap of bilayer MoS2 through the two different thermal expansion coefficients of sapphire. Also, we propose a simple model to explain and precisely predict the bandgap-shifted behavior.

© 2017 Optical Society of America

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