Abstract
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, we 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 SnO2. 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.
Original language | American English |
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Pages | 543-546 |
Number of pages | 4 |
DOIs | |
State | Published - 1997 |
Event | Proceedings of the 1997 IEEE 26th Photovoltaic Specialists Conference - Anaheim, CA, USA Duration: 29 Sep 1997 → 3 Oct 1997 |
Conference
Conference | Proceedings of the 1997 IEEE 26th Photovoltaic Specialists Conference |
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City | Anaheim, CA, USA |
Period | 29/09/97 → 3/10/97 |
Bibliographical note
For preprint version, including full text online document, see NREL/CP-530-23580NREL Publication Number
- NREL/CP-520-24976