Abstract
In this paper we report the study of CdZnS thin films grown on the soda-lime glass (SLG) substrates by Chemical Bath Deposition (CBD) process for buffer layer applications in CuGaSe 2 (CGS) solar cells. Structural, surface morphology, optical, and electrical properties of as-deposited CdZnS films were investigated by XRD, SEM, spectrophotometer, and four probes resistivity measurements as a function of Zn- composition in the solution. The CdZnS films have hexagonal structures. The grain size of CdZnS films was found to increase with increasing Zn- content in the solution. The films with 30% of Zn in the solution showed a better than 80% transmittance for wavelengths longer than 600 nm and film thickness less than 50 nm. The values of energy band gaps obtained are 2.40, 2.55, and 2.70 eV for Zn- content of 0, 30, and 50%, respectively. The resistivity of CdZnS films was found to increase as the Zn content increases.
| Original language | English |
|---|---|
| Pages (from-to) | 449-452 |
| Number of pages | 4 |
| Journal | Conference Record of the IEEE Photovoltaic Specialists Conference |
| Publication status | Published - 2005 |
| Externally published | Yes |
| Event | 31st IEEE Photovoltaic Specialists Conference - 2005 - Lake Buena Vista, FL, United States Duration: 2005 Jan 3 → 2005 Jan 7 |
ASJC Scopus subject areas
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
- Electrical and Electronic Engineering