The morphology of CdS thin films deposited on SnO{sub 2}-coated glass substrates
- National Renewable Energy Lab., Golden, CO (United States)
- United Arab Emirates Univ., Al Ain (United Arab Emirates). Dept. of Physics
The morphology and microstructure of cadmium sulfide (CdS) thin films are a major concern in the fabrication process of CdTe solar cells. In this work, the authors investigate the morphology and microstructure of chemical-bath-deposited CBD CdS in order to better understand the growth conditions that give rise to films for optimum device performance. The film morphology was investigated by field-emission, high-resolution scanning electron microscopy (SEM). The film microstructure was studied by transmission electron microscopy (TEM), while the film`s chemistry was investigated by Auger electron spectroscopy (AES). All films examined exhibited pinholes and discontinuities varying in size and density. This may have a significant impact on cell performance by providing shunt paths between the CdTe and the SnO{sub 2}. Additionally, the CdS films are heavily faulted, which may partially explain why a high density of planar defects is observed in the CdTe/CdS interface region.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC36-83CH10093
- OSTI ID:
- 304317
- Report Number(s):
- CONF-970953--
- Country of Publication:
- United States
- Language:
- English
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