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The current research focuses on sol-gel derived synthesis and RF sputter deposition of molybdenum disulphide (MoS2) over polycrystalline Si solar cell. Various coating layers were obtained under different sputter deposition at regular intervals. The influence of MoS2 sputter coating on optical, thermal chemical structural properties was examined through various characterisation techniques. 30 minutes coated solar cell reported maximum light transmittance of 95 % in the visible spectrum and minimum electrical resistivity of 2 × 10-3ohm-cm. 30 minutes coated solar cell exhibited maximum power conversion efficiency (PCE) of 19.19 % (open source) and 21.01 % (controlled source). Thermal imaging data reveal that the optimal coating layer experiences a minimum temperature of 33.9 °C and 49.9 °C. From experimental results, sputter deposited MoS2 Si solar cells experience minimum light reflectance and enhanced cell performance.

Obtaining maximum efficiency is one of the key elements of renewable energy sources in the present era. In this context, the research focuses on enhancing the power conversion efficiency of silicon solar cells through anti-reflective coating. Better light transmittance in silicon solar cells with anti-reflective thin film coatings results in higher power conversion efficiency. The RF sputtering technique was employed to deposit the thin film of ARCs on polycrystalline Si solar cells. Blends of metal oxides such as SiO2, TiO2, and ZrO2 have been employed in different combinations to achieve a higher PCE. Using the RF sputtering technique, the coating was uniform. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were both used to examine the structural and morphological characteristics of ARC-coated and uncoated silicon solar cells, respectively. By employing the four-point probe approach, the electrical resistivity was measured in the dark and at room temperature. Solar cell samples were examined for their optical properties through UV–visible spectroscopy. By comparing the efficiency of the ARC-coated and uncoated solar cell samples, it is evident that solar cells coated with the SiO2/TiO2/ZrO2 mechanical blend show an improved PCE of 19.8% under open atmospheric conditions and 21.93% under controlled atmospheric conditions compared to the uncoated, SiO2, TiO2, and ZrO2-coated cells. [ABSTRACT FROM AUTHOR]

The present scenario indefinitely needs certain developments in the field of renewable energy as an effective replacement of conventional energy sources. Reflection loss in solar cell is one of the reasons for reduction in power conversion efficiency which can be controlled through antireflective coatings on solar cell surface. This current research focuses on the development of MoSe2 nano-crystalline structure as an effective antireflective material for attaining enhanced light trapping ability. Electrospraying technique was taken into account for the deposition of thin films over the solar cell surface. Transition metal chalcogenide MoSe2 was deposited under argon atmosphere with the coating time of 30–120 min. The impact of thin film MoSe2 coating on solar cell surface was determined through optical, electrical, morphological and thermal studies. The thickness of optimal MoSe2 coating was found to be 761 nm through Atomic Force Microscopy technique. The maximum optical transmittance of 87.6 % was achieved at 90 min of coating (D3) within the spectrum of 300 to 800 nm wavelength. The minimum electrical resistivity of 90 min coated MoSe2 thin film coating over multicrystalline silicon solar cell was measured as 3.93 × 10− 3 Ω-cm. The enhanced power conversion efficiency of MoSe2 coated solar cell under open and closed conditions were found to be 17.13 and 18.67 % especially for D3 solar cell sample, which facilitates maximum transmission of incident photons into the solar cell. From the observed results, it is evident that MoSe2 nanostructure was found to be promising antireflection coating material for multicrystalline silicon solar cell. [ABSTRACT FROM AUTHOR]