Affiliation:
1. Department of Mechanical Engineering and Research Center of Industrial Technology Jeonbuk National University Jeonju 54896 R. O. Korea
Abstract
The thermolytic growth of molybdenum disulfide thin films for solar cell applications is investigated. The thin films are spin‐coated and thermally annealed, and they show a sulfur‐deficient nanosheet structure with various spectral emissions. The intrinsic thin films are used to form heterostructures in silicon solar cells. Two types of Si solar cells are fabricated using a MoS2/p‐Si heterojunction structure and MoS2/SiOx/pn‐Si tunneling structure. The former heterojunction cell does not show photovoltaic cell character. However, the later oxide tunneling cell shows a short‐circuit current of 8.23 A, an open‐circuit voltage of 0.602 V, and a conversion efficiency of 14.6%. This indicates that the sulfur defect‐induced MoS2 thin film shows an n‐type Ohmic character, but it might not form a stable interfacial charge depletion layer with p‐Si wafers in large‐scale cell fabrication.
Funder
National Research Foundation of Korea
Subject
Materials Chemistry,Electrical and Electronic Engineering,Surfaces, Coatings and Films,Surfaces and Interfaces,Condensed Matter Physics,Electronic, Optical and Magnetic Materials