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Discrete Aluminum Oxide Surface Passivation Enables High Efficient Cadmium Telluride Solar Cells
One-line summary
A solar energy research paper on Discrete Aluminum Oxide Surface Passivation Enables High Efficient Cadmium Telluride Solar Cells.
Engineering notes
Engineering notes will be added by the Power for Solar editorial team.
Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Cadmium telluride (CdTe) thin film has attracted significant attention in photovoltaic applications due to its high optical absorption coefficient and long‐term stable performance. However, the undesired back contact still worsens the charge carrier transport and thus hinders the power conversion efficiency (PCE) of CdTe solar cells. In this study, discrete aluminum oxide (Al 2 O 3 ) nanoparticles are developed as a passivation layer to modify the back interface between the CdTe absorber and the Au electrode. The results demonstrate that the poorly coated Al 2 O 3 nanoparticles do not lead to an increase in resistance. In addition, the carrier lifetime improves after Al 2 O 3 nanoparticles are involved, which allows more efficient charge carrier transport at the back contact interface. Finally, the CdTe solar cell exhibits significantly improved fill factor and open‐circuit voltage ( V OC ) of 74.81% and 848 mV, with a PCE of 17.45%. These results disclose new insights into addressing key challenges that hinder the development of CdTe solar cells.
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