Spray Coating Luminescence Layers on Glass for Si Solar Cells Efficiency Enhancement

Katarzyna Znajdek, Natalia Gwardjan, Aleksandra Sosna-Głębska and Maciej Sibiński
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Katarzyna Znajdek: Department of Semiconductor and Optoelectronic Devices, Lodz University of Technology, 10 Politechniki, 93-590 Lodz, Poland
Natalia Gwardjan: Department of Semiconductor and Optoelectronic Devices, Lodz University of Technology, 10 Politechniki, 93-590 Lodz, Poland
Aleksandra Sosna-Głębska: Department of Semiconductor and Optoelectronic Devices, Lodz University of Technology, 10 Politechniki, 93-590 Lodz, Poland
Maciej Sibiński: Department of Semiconductor and Optoelectronic Devices, Lodz University of Technology, 10 Politechniki, 93-590 Lodz, Poland

Energies, 2021, vol. 14, issue 21, 1-11

Abstract: The article presents experimental research focused on the improvement of solar cells efficiency using the photoluminescence down-shifting effect. In the paper, the authors present the results of solar cells performance enhanced with the proposed solution. As light energy converted active materials, rare earth elements of europium and dysprosium were implemented. In the experiments, luminescent layers were deposited on top of photovoltaic protective glass in order to absorb the highest possible amount of ultraviolet light from the incident solar spectrum. Spray coating deposition technology with various types of ink compositions was used for process optimization. It was observed that there are optimal concentrations and solvent types for the best conversion effect and consequently, the improvement of solar cell external quantum efficiency (EQE) together with the PV cell absolute efficiency enhancement.

Keywords: down-shifting; photoluminescence; external quantum efficiency; rare earth elements; spray-coating methods (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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