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20%-efficient Polycrystalline Cd(Se,Te) Thin-Film Solar Cells with Compositional Gradient near the Front Junction

Through oxygen management, a Cd(O,S,Se,Te) region with gradient bandgap was incorporated at the front interface of Cd(Se,Te) solar cells to reduce interfacial recombination, demonstrating Cd(Se,Te) solar cells with a champion power conversion efficiency (PCE) of 20.03%.

Deng-Bing Li

Dec 21, 2022

Nature Energy

Behind the Paper

Low-temperature group V diffusion doping in highly efficient-CdSeTe solar cells

Here we report a new CdTe solar cell doping approach with great potential using a solution method via an ex-situ diffusion technique at low temperature (<230 ºC). The As doped CdSeTe solar cells with a decent efficiency of 18% and a breakthrough activation ratio of ~ 5.88% are obtained.

Deng-Bing Li

Jun 26, 2021

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