Open Access

ARTICLE

Monolayer MoS₂/n-Si Heterostructure Schottky Solar Cell

Omar Salih Omar^*

The University of Duhok, College of Science, Department of Physics, Duhok, Kurdistan Region, Iraq

* Corresponding Author: Omar Salih Omar. Email:

Journal of Renewable Materials 2022, 10(7), 1979-1988. https://doi.org/10.32604/jrm.2022.018765

Received 16 August 2021; Accepted 09 November 2021; Issue published 07 March 2022

Abstract

Monolayer MoS₂ has a promising optoelectronics property, with a bandgap in the visible range; the material is a potential candidate for solar cell applications. In this work, we grew MoS₂ monolayers using a low-pressure chemical vapor deposition approach. To produce uniform wafer-scale MoS₂ monolayer films, precursors molybdenum dioxide (MoO₂) and sulfur (S) are utilized. Atomic force microscopy was used to quantify the thickness of the monolayers, and the result was validated by Raman spectroscopy. Transmission electron microscopy (TEM) was used to confirm the crystalline quality of the monolayers, and photoluminescence spectroscopy was used to evaluate their optical properties. We were able to create a Schottky solar cell with a MoS2 monolayer up to 1 cm² area by transferring monolayer film to n-type silicon. The MoS₂/n-Si Schottky solar cell demonstrated photovoltaic characteristics with a short circuit current density of 14.8 mA cm⁻² and an open-circuit voltage of 0.32 V under 100 mW cm⁻² illumination. The fill factor and energy conversion efficiency were 53% and 2.46%, respectively, with the highest external quantum efficiency at 530 nm being 44%.

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Keywords

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