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Oxygen Management to Avoid Photo-Inactive Cd(S,Se) for Efficient Cd(Se,Te) Solar Cells AITranslate

DengBing Li; Sabin Neupane; Sandip S. Bista; Chuanxiao Xiao; Abasi Abudulimu; Manoj K. Jamarkattel; Adam B. Phillips; Michael J. Heben; Jonathan D. Poplawsky; David A. Cullen; ChunSheng Jiang; Randall J. Ellingson; Yanfa Yan;
University of Toledo; University of Toledo; University of Toledo; National Renewable Energy Laboratory; University of Toledo; University of Toledo; University of Toledo; University of Toledo; Oak Ridge National Laboratory; Oak Ridge National Laboratory; National Renewable Energy Laboratory; University of Toledo; University of Toledo
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Abstract AITranslate

Our previous work has demonstrated that the formation of a penternary cadmium chalcogenide Cd(O,S,Se,Te) region can significantly reduce the front interface recombination in Cd(Se,Te)-based thin-film solar cells. In this work, we have shown that oxygen management during the device fabrication is crucial to form this region. While both the CdS and CdSe layer depositions and the postdeposition CdCl2 treatment should be conducted in the presence of oxygen, the CdTe deposition should be conducted in an oxygen-free atmosphere. Improper oxygen management leads to low device performance due to the formation of a photoinactive Cd(S,Se) region and reduced absorber quality. Additionally, we investigated the carrier transport and collection properties in devices with photoinactive Cd(S,Se) and photoactive Cd(O,S,Se,Te) at the front interface to gain comprehensive understanding of the mechanisms that resulted in improved efficiencies approaching 20%.

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DOI：https://doi.org/10.1021/acsenergylett.3c00141

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Citation Information:

Our previous work has demonstrated that the formation of a penternary cadmium chalcogenide Cd(O,S,Se,Te) region can significantly reduce the front interface recombination in Cd(Se,Te)-based thin-film solar cells. In this work, we have shown that oxygen management during the device fabrication is crucial to form this region. While both the CdS and CdSe layer depositions and the postdeposition CdCl2 treatment should be conducted in the presence of oxygen, the CdTe deposition should be conducted in an oxygen-free atmosphere. Improper oxygen management leads to low device performance due to the formation of a photoinactive Cd(S,Se) region and reduced absorber quality. Additionally, we investigated the carrier transport and collection properties in devices with photoinactive Cd(S,Se) and photoactive Cd(O,S,Se,Te) at the front interface to gain comprehensive understanding of the mechanisms that resulted in improved efficiencies approaching 20%.

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GB/T 7714-2015 [1] DengBing Li, Sabin Neupane, Sandip S. Bista, et al. ACS Energy Letters, 2023(8). DOI:10.1021/acsenergylett.3c00141.
MLA [1] DengBing Li, et al., ACS Energy Letters, no. 8, 2023, https://doi.org/10.1021/acsenergylett.3c00141.
APA [1] DengBing Li, Sabin Neupane, Sandip S. Bista, Chuanxiao Xiao, Abasi Abudulimu, Manoj K. Jamarkattel, Adam B. Phillips, Michael J. Heben, Jonathan D. Poplawsky, David A. Cullen, ChunSheng Jiang, Randall J. Ellingson, & Yanfa Yan. (2023). ACS Energy Letters(8). https://doi.org/10.1021/acsenergylett.3c00141
IEEE [1] DengBing Li, Sabin Neupane, Sandip S. Bista, Chuanxiao Xiao, Abasi Abudulimu, Manoj K. Jamarkattel, Adam B. Phillips, Michael J. Heben, Jonathan D. Poplawsky, David A. Cullen, ChunSheng Jiang, Randall J. Ellingson, and Yanfa Yan, ACS Energy Letters, no. 8, 2023, doi: 10.1021/acsenergylett.3c00141.