UPSI Digital Repository (UDRep)
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UPSI Digital Repository (UDRep)
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| Abstract : Universiti Pendidikan Sultan Idris |
| Thin-film photovoltaic materials like WS2 offer abundant, low-cost, transparent energy sources. WS2 boasts high carrier mobility, a superior optical absorption coefficient over 105 cm− 1, a favorable band gap of 1.3 eV, and non-toxic properties, making it a promising photon absorber. Previous studies explored various WS2-based solar cell designs for enhanced efficiency. This study investigates an ultrathin WS2 solar cell with Cu2O as the hole transport layer (HTL) and ZnSe as the electron transport layer (ETL). The traditional toxic CdS-based buffer structure is proposed to replace a ZnSe-based alternative. Results show significant enhancements in electrical characteristics, with a maximum conversion efficiency of 31.99% at the optimal bandgap, with a VOC of 1.03 V, a JSC of 35.26 mAcm− 2, and an FF of 88.08% with Cu2O HTL. On the other hand, we have got Voc of 0.97 V, Jsc of 35.02 mA/cm2, FF of 87.08%, and PCE of 29.72% without HTL. This suggests the potential of the proposed structure for improving thin-film solar cell performance. © The Author(s), under exclusive licence to The Optical Society of India 2024. |
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