CdTe/CdS多晶薄膜太阳能电池正向电流的计算机模拟分析

Computer Analysis of Forward Currents in Thin Film Polycrystalline CdTe/CdS Solar Cells

应用数值方法来解CdTe／CdS异质结J－V特性，进而得出其二极管理想因子、激活能以及异质结空间电荷区党度。结果表明，CdTe一侧空间电荷区复合是主导CdTe／CdS异质结传输电流的主要机制。说明在CdTe基太阳能电池制造中，控制多晶薄膜化学缺陷对提高电池能量转换效率的重要意义。

Using a numerical method, the J-V characteristics of n-CdS/p-CdTe heterojunction solar cells have been solved, deducing the diode ideality factor, activation energy and space charge region width. The results indicate that thecurrent of CdS/CdTe heterojunction is dominated by the depletion region recombination mechanism- The theoretical calculation further confirms the importance ofthe study of CdTe chemical defects in improving CdTe based solar cell performances.