Analysis workforce achieves important photo voltaic cell effectivity milestone
by Simon Mansfield
Sydney, Australia (SPX) Might 26, 2024
A analysis workforce has created a tandem photo voltaic cell utilizing antimony selenide as the underside cell materials and a hybrid perovskite materials as the highest cell, attaining over 20 % energy conversion effectivity. This development highlights antimony selenide’s potential for backside cell purposes.
Photovoltaic expertise converts daylight into electrical energy, providing a clear vitality supply. Scientists intention to boost the effectivity of photo voltaic cells, attaining over 20 % in typical single-junction cells. Surpassing the Shockley-Queisser restrict in these cells can be pricey, however tandem photo voltaic cells can overcome this restrict by stacking supplies.
The workforce targeted on antimony selenide for tandem cells, historically utilized in single-junction cells. “Antimony selenide is an acceptable backside cell materials for tandem photo voltaic cells. Nonetheless, due to the rarity of reported tandem photo voltaic cells utilizing it as a backside cell, little consideration has been paid to its software. We assembled a tandem photo voltaic cell with excessive conversion effectivity utilizing it as the underside cell to display the potential of this materials,” stated Tao Chen, professor of Supplies Science and Engineering on the College of Science and Expertise of China.
Tandem cells take up extra daylight than single-junction cells, changing extra gentle into electrical energy. The workforce created perovskite/antimony selenide tandem cells with a clear conducting electrode, optimizing the spectral response and attaining over 17 % effectivity. By optimizing the antimony selenide backside cell, they reached 7.58 % effectivity.
The assembled four-terminal tandem cell achieved 20.58 % effectivity, larger than unbiased subcells. The tandem cell is steady and makes use of unhazardous components. “This work supplies a brand new tandem gadget construction and demonstrates that antimony selenide is a promising absorber materials for backside cell purposes in tandem photo voltaic cells,” stated Chen.
The workforce goals to develop an built-in two-terminal tandem cell and additional enhance efficiency. “The excessive stability of antimony selenide supplies nice comfort for the preparation of two-terminal tandem photo voltaic cell, which implies that it could have good outcomes when paired with fairly a couple of several types of prime cell supplies.”
Analysis Report:Sb2Se3 as a backside cell materials for environment friendly perovskite/Sb2Se3 tandem photo voltaic cells
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Tsinghua College
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