Infrared and Laser Engineering, Volume. 45, Issue 6, 621003(2016)
Optical transmittance properties for CdS films in CdTe-HgCdTe tandem solar cells
Improving the spectral transmittance of CdS window layer used in CdTe-HgCdTe tandem solar cells has a significant impact on the effective utilization of sunlight and increases the device short-circuit current density(Jsc). Herein, the average transmittance(T) and Jsc losses of as-deposited and CdCl2 annealed CdS films prepared by chemical bath deposition(CBD), near space sublimation(CSS) and magnetron sputtering(SPUT) are studied. The results show that: in the range of 520-820 nm, the as-deposited and annealed CdS films by CBD exhibit the highest T and the lowest Jsc losses of the CdTe top cell; in the range of 820-1 150 and 520-1 150 nm, the as-deposited and annealed CdS films by SPUT exhibit the highest T and the lowest Jsc losses of the HgCdTe bottom cell and the CdTe-HgCdTe tandem solar cells. In the range of 520-820, 820-1 150 and 520-1 150 nm, the CdCl2 annealing can greatly increase T of CdS films and decrease the Jsc losses of the CdTe top cell, the HgCdTe bottom cell and the CdTe-HgCdTe tandem solar cells.
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Guo Min, Zhu Xiurong, Li Hejun. Optical transmittance properties for CdS films in CdTe-HgCdTe tandem solar cells[J]. Infrared and Laser Engineering, 2016, 45(6): 621003
Category: 先进光学材料
Received: Oct. 12, 2015
Accepted: Nov. 6, 2015
Published Online: Jul. 26, 2016
The Author Email: Min Guo (guomin-2014@sohu.com)