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بررسي اثر ضخامت زيرلايه بر جذب تك لايه هاي TMDC در ناحيه طول موج مرئي
بررسي اثر ضخامت زيرلايه بر جذب تك لايه هاي TMDC در ناحيه طول موج مرئي
Abstract : Two-dimensionam transition-metal dichalcogenides (TMDC) layers with direct bandgaps have made a new horizon for pplication in photonics and electroptics. The presence of bandgap causes a significant absorption useful in photovoltaic devices. When these layers are located on a substrate that leads to a frequent optical reflection thus affect the absorption.Typically, SiO2 or Si or their combination as a substrate is used for these monolayers. In this paper, we used a transfer matrix method to study the absorption spectra of TMDC monolayers including MoSe2, WSe2, MoS2 and WS2 with the presence of SiO2/ Si substrate with different thicknesses of SiO2 layer. We found that using the SiO2 layer with a thickness of 90 nm in SiO2/ Si substrate does not change the general behavior of absorption and increases the absorption in some regions of the wavelength range.
https://hal.archives-ouvertes.fr/hal-02913462
Contributor : Ensiyeh Mohebbi Connect in order to contact the contributor
Submitted on : Sunday, August 9, 2020 - 9:45:17 AM
Last modification on : Wednesday, October 14, 2020 - 4:06:30 AM
Contributor : Ensiyeh Mohebbi Connect in order to contact the contributor
Submitted on : Sunday, August 9, 2020 - 9:45:17 AM
Last modification on : Wednesday, October 14, 2020 - 4:06:30 AM
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