2014
DOI: 10.1139/cjp-2013-0604
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Monitoring of powder formation via optical emission spectroscopy and self-bias-voltage measurements for high depletion μc-Si:H deposition regimes

Abstract: Microcrystalline silicon fabricated by plasma-enhanced chemical vapour deposition (PECVD) is commonly used as an absorber material in thin-film tandem solar cells. The source gases used in the c-Si:H PECVD process are silane and hydrogen. One way to further increase the production efficiency of solar modules is to increase the gas utilization during deposition of the silicon absorber layer. In this work this is achieved by reducing the hydrogen flow. These deposition conditions are known to promote powder form… Show more

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