Abstract
Amorphous (a-Si) and microcrystalline silicon (μc-Si) are widely used in photovoltaics and thin film transistors. These products suffer from instability and less than desired electrical properties. We have utilized photon-assisted electron cyclotron resonance chemical vapor deposition (PA-ECRCVD) resulting in great improvement in both areas. For example, PA-ECRCVD compared with conventional ECR-CVD gives carrier lifetime of 1.35 μs compared to 0.17 μs, and photovoltaic solar cell efficiency of 10% compared to 5.9%. Moreover, the PA-ECRCVD cell only degraded to 9.8% compared to the ECR-CVD cell degradation to 5.5%, under long term exposure to tungsten lamp illumination. In addition, PA-ECRCVD gives much enhanced crystallinity in μc-Si as revealed by atomic force microscopy and Raman spectroscopy.
| Original language | English |
|---|---|
| Pages (from-to) | 49-54 |
| Number of pages | 6 |
| Journal | Materials Research Society Symposium - Proceedings |
| Volume | 557 |
| DOIs | |
| State | Published - 1999 |
| Event | The 1999 MRS Spring Meeting - Symposium A 'Amorphous and Heterogenous Silicon Thin Films: Fundamentals to Devices' - San Francisco, CA, USA Duration: Apr 5 1999 → Apr 9 1999 |
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