Bifacial CuInSe2 photo voltaic cells obtain file effectivity on clear substrates
by Riko Seibo
Tokyo, Japan (SPX) Jul 22, 2025
The Division of Power and Environmental Expertise on the Daegu Gyeongbuk Institute of Science and Expertise (DGIST) has developed a next-generation thin-film photo voltaic cell able to producing electrical energy from either side. Spearheaded by Principal Researchers Daehwan Kim and Shijoon Sung, the crew fabricated slender band hole CuInSe2 photo voltaic cells utilizing copper, indium, and selenium on clear electrode substrates, introducing a bifacial structure that enhances vitality yield.
Bifacial photo voltaic cells are designed to reap daylight from each the back and front sides, boosting energy technology with out growing the set up footprint. Nonetheless, producing high-performance thin-film units on clear electrodes has been difficult as a result of their restricted warmth tolerance. Conventional fabrication strategies require excessive temperatures, which degrade clear supplies and compromise cell effectivity.
To beat this, the DGIST crew included silver (Ag) into the CuInSe2 compound, enabling the deposition course of at a decreased temperature beneath 420C. Additionally they optimized the system construction by making a gallium (Ga) gradient on the base of the absorber layer, which improved cost transport and decreased recombination losses. These improvements considerably enhanced the efficiency of CuInSe2 bifacial photo voltaic cells on heat-sensitive clear substrates.
The ensuing units achieved a notable 15.3% effectivity from the entrance and eight.44% from the rear, with a bifacial energy technology density of 23.1 mW/cm-ranking among the many highest globally for thin-film cells of this sort.
“This examine gives a brand new chance to extend effectivity for thin-film photo voltaic cells primarily based on clear substrates,” acknowledged Kim and Sung. “We’ll additional increase the scope of purposes for high-efficiency bifacial photo voltaic cell expertise primarily based on clear substrates.”
The examine was co-authored by PhD scholar Ali Amanat and researcher Donghwan Jeon. It appeared as the duvet article within the June 17 on-line version of Superior Power Supplies.
Analysis Report:Highly Efficienct Bifacial Narrow Bandgap Ag-CuInSe2 Solar Cells on ITO
Associated Hyperlinks
Daegu Gyeongbuk Institute of Science and Technology
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