کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5465950 | 1517979 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Capacitance-voltage and Hall analysis on polycrystalline Cu(In,Ga)Se2 are compared.
- Both techniques appear reliable with little error, and should be comparable.
- Both techniques yield significantly different dopant concentrations.
- Cadmium in-diffusion from the CdS buffer alters surface-near doping in solar cells.
We compare the dopant concentration of polycrystalline Cu(In,Ga)Se2 thin film absorbers derived from Hall and capacitance-voltage measurements. Although both measurements techniques appear to be reliable, dopant concentrations determined by capacitance-voltage analysis are significantly lower and vary with probing depth into the absorber. The doping profiles and differences between both measurement techniques are consistent with Cd in-diffusion from the CdS buffer layer during solar cell fabrication. Different doping profiles obtained after a variation of the CdS deposition process support this scenario.
Journal: Thin Solid Films - Volume 633, 1 July 2017, Pages 222-226