Original Research
Enhancing power conversion efficiency of polycrystalline silicon solar cells through ZnO/SiO2/Al2O3 anti-reflective coatings via spin coating
T.Anu
a
U. Gobikrishnan
b
S. Karthikeyan
c
S. Chirag
d
S. Vishal
e
N. Aravindan
f
S.Swathi
g

aDepartment of Multidisciplinary Engineering, The NorthCap University,

Gurugram

bDepartment of Mechanical Engineering, Sona College of Technology, Salem

cDepartment of Mechanical Engineering, Erode Sengunthar Engineering College, Perundurai, Erode- 638057

dDepartment of product design, DLC state university of performing and visual

arts, Rohtak

eDepartment of Mechanical Engineering, Ramdeobaba University, Nagpur -

440013

fDepartment of Fire Engineering, National Fire Service College, Nagpur

gDepartment of Physics, Agni College of Technology, Chennai


Journal of Ovonic Research 2025, 21(1),75-84; https://doi.org/10.15251/JOR.2025.211.75
Submitted:Nov 03, 2024
Accepted:Jan 23, 2025
Published:Jan 09, 2025
+
Cite This Article
T.Anu ,U. Gobikrishnan ,S. Karthikeyan ,S. Chirag ,S. Vishal ,N. Aravindan ,S.Swathi . (2025). Journal of Ovonic Research. Enhancing power conversion efficiency of polycrystalline silicon solar cells through ZnO/SiO2/Al2O3 anti-reflective coatings via spin coating, 21(1), ,75-84. https://doi.org/10.15251/JOR.2025.211.75
Abstract

The investigation aims to enhance the photocurrent generation of p-Si solar cells through the application of anti-reflective coatings (ARC) including ZnO, SiO2, Al2O3, and a combination of ZnO, SiO2, and Al2O3. The spin coating approach was preferred for depositing anti-reflective coating materials as clear thin films on the substrate of the p-Si cells. The absorbance, reflectance, I-V, morphology, and temperature behaviour of the ARCs onp-Si cells were examined to ascertain the impact of the ARCs. Among several coating materials, the blended ZnO+SiO2+Al2O3on p-Si cells achieved a highest conversion efficiency of 20.71% under controlled setup condition, with anelectrical resistance of5.83×10-3 Ω cm. The examination of the optical characteristics demonstrated a highestabsorbance of 92% and a lowest reflection loss of 10%, attained by the ZnO+SiO2+Al2O3sample within UV band. The ZnO+SiO2+Al2O3 blend exhibited significant enhancement in thermal behaviour, achieving a lowest temperature of 49.9 °C in controlled source settings. Analyses demonstrated that the composite ZnO+SiO2+Al2O3 is a suitable blendwithanideal anti-reflectiveproperties to improve the efficiency of p-Si solar panels.

©2026 by the authors. Submitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
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