| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7942194 | Superlattices and Microstructures | 2015 | 6 Pages |
Abstract
We propose single walled carbon nanotubes as the n-type window partner of CdTe layer in a conventional CdS/CdTe thin film solar cells. The semiconductor nanotubes have superior optical and electrical properties i.e. controllable high band gap, being highly conductive and non-diffusive (not mobile). We modeled current-voltage characteristics of hybrid SWCNT/CdTe structure using Sah-Noyce-Shockley theory instead of Schottky barrier theory. The former theory is rather strong since it is based on carrier transport in the depletion region of a pn junction and considers the defect density within the depletion width. Also, a time dependent approach is used to simulate the degradation of device metrics under bias, illumination and temperature. It is discussed how a nanolayer can reduce the degradation rate of a thin film solar cell by surpassing grain boundaries and mobile ions migration towards junction.
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Materials Science
Electronic, Optical and Magnetic Materials
Authors
Mohammad Houshmand, M. Hossein Zandi, Nima E. Gorji,