| Autor: |
Bin Rafiq MKS; Solar Energy Research Institute, The National University of Malaysia, 43600, Bangi, Malaysia., Amin N; Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, The National University of Malaysia, 43600, Bangi, Selangor, Malaysia. nowshad@uniten.edu.my.; Institute of Sustainable Energy, Universiti Tenaga Nasional (@The National Energy University), Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia. nowshad@uniten.edu.my., Alharbi HF; Mechanical Engineering Department, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia. harbihf@ksu.edu.sa., Luqman M; Mechanical Engineering Department, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia., Ayob A; Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, The National University of Malaysia, 43600, Bangi, Selangor, Malaysia., Alharthi YS; Center of Excellence for Research in Engineering Materials, King Saud University, Riyadh, 11421, Saudi Arabia., Alharthi NH; Center of Excellence for Research in Engineering Materials, King Saud University, Riyadh, 11421, Saudi Arabia., Bais B; Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, The National University of Malaysia, 43600, Bangi, Selangor, Malaysia., Akhtaruzzaman M; Solar Energy Research Institute, The National University of Malaysia, 43600, Bangi, Malaysia. akhtar@ukm.edu.my.; Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, The National University of Malaysia, 43600, Bangi, Selangor, Malaysia. akhtar@ukm.edu.my. |
| Abstrakt: |
Radio frequency (RF) magnetron sputtering was used to deposit tungsten disulfide (WS 2 ) thin films on top of soda lime glass substrates. The deposition power of RF magnetron sputtering varied at 50, 100, 150, 200, and 250 W to investigate the impact on film characteristics and determine the optimized conditions for suitable application in thin-film solar cells. Morphological, structural, and opto-electronic properties of as-grown films were investigated and analyzed for different deposition powers. All the WS 2 films exhibited granular morphology and consisted of a rhombohedral phase with a strong preferential orientation toward the (101) crystal plane. Polycrystalline ultra-thin WS 2 films with bandgap of 2.2 eV, carrier concentration of 1.01 × 10 19 cm -3 , and resistivity of 0.135 Ω-cm were successfully achieved at RF deposition power of 200 W. The optimized WS 2 thin film was successfully incorporated as a window layer for the first time in CdTe/WS 2 solar cell. Initial investigations revealed that the newly incorporated WS 2 window layer in CdTe solar cell demonstrated photovoltaic conversion efficiency of 1.2% with V oc of 379 mV, J sc of 11.5 mA/cm 2 , and FF of 27.1%. This study paves the way for WS 2 thin film as a potential window layer to be used in thin-film solar cells. |
