Abstract
We investigated the effect of CdCl2 treatment of CdS films on the photovoltaic performance of polycrystalline CdTe/CdS solar cells. X-ray diffraction studies indicated that the diffusion of S into CdTe is qualitatively the same for CdTe/CdS films fabricated with both as-deposited and CdCl2-treated CdS. A major difference was observed in the extent of Te diffusion into CdS for the two types of CdSfilms. Full conversion of CdS into CdS1-yTey was observed for films prepared with as-deposited CdS, while the formation of the ternary phase was below the detection limit for films prepared with CdCl2-treated CdS. Photoluminescence measurements confirmed this result. The difference in interdiffusion leads to differences in optical transmission of CdS films and spectral reponse of CdTe/CdS solarcells. An increase of 2.7 mA/cm2 in short-circuit current density was observed as a result of improved spectral response in the wavelength range of 500-600 nm for the CdCl2-treated CdS.
Original language | American English |
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Pages | 331-336 |
Number of pages | 6 |
State | Published - 1996 |
Event | Thin Films for Photovoltaic and Related Device Applications: Materials Research Society Symposium - San Francisco, California Duration: 8 Apr 1996 → 11 Apr 1996 |
Conference
Conference | Thin Films for Photovoltaic and Related Device Applications: Materials Research Society Symposium |
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City | San Francisco, California |
Period | 8/04/96 → 11/04/96 |
Bibliographical note
Work performed by Colorado School of Mines, Golden, ColoradoNREL Publication Number
- NREL/CP-23035