Improved CdTe Solar-Cell Performance with An Evaporated Te Layer before The Back Contact
Improved CdTe Solar-Cell Performance with An Evaporated Te Layer before The Back Contact
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通过在背接触之前蒸发 Te 层提高 CdTe 太阳能电池性能
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
J. Sites
中科院分区：
文献类型：
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作者：
A. Moore;Tao Song;J. Sites
制造了带有与背接触相邻的 Te 缓冲层的 CdTe 太阳能电池。详细评估了Te层对电池性能的影响。测量Te层（10^18cm^-3）的载流子密度。 CdTe/Te 界面的价带偏移 (~0.3–0.5 eV) 由电流-电压-温度测量和已发表的报告确定。这些值被纳入模拟模型中，并与测量的实验性能进行比较，具有良好的一致性。最值得注意的是，我们发现 Te 层可以提高电池性能，而形成背接触所需的 Cu 则更少。
CdTe solar cells with a Te-buffer layer adjacent to the back contact were fabricated. The effects of the Te layer on cell performance were evaluated in detail. The carrier density of the Te layer (10^18 cm^-3) was measured. The valence band offset of the CdTe/Te interface (~0.3–0.5 eV) was determined from current-voltage-temperature measurements and published reports. These values were incorporated into a simulation model and compared to the measured experimental performance with good agreement. Most notably, it was found that the Te layer allowed improved cell performance with less Cu required to form the back contact.