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首页> 美国政府科技报告 >Stable, high-efficiency amorphous-silicon solar cells with low hydrogen content. Final subcontract report, 1 March 1991--31 March 1993.
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Stable, high-efficiency amorphous-silicon solar cells with low hydrogen content. Final subcontract report, 1 March 1991--31 March 1993.

机译：稳定，高效的非晶硅太阳能电池，氢含量低。最终分包合同报告，1991年3月1日至1993年3月31日。

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This report describes a 21-month project to demonstrate amorphous-silicon (a-Si) solar cells with high stabilized conversion efficiency. The objective was to develop a research program spanning material issues (more stable a-Si and better a-SiGe alloys) and device issues (more stable a-Si-based solar cells) with the goal of high stabilized solar cell efficiency. The Institute of Energy Conversion (IEC) produced and analyzed the stability of a-Si films and solar cells with reduced hydrogen content (2--6%). A thermodynamic model of defect formation was developed that describes the high-temperature degraded state of a solar cell. An analysis of bifacial current voltage and quant-efficiency results for a-SiGe p-i-n devices with transparent front and back contacts provided information about the influence of alloying and band-gap grading on hole and electron collection. IEC also studied the stability of graded and ungraded a-SiGe solar cells using bifacial devices to learn about the relative degradation of hole and electron collection, and concludes that degradation of the photoconductivity of a-SiGe materials does not agree with degradation observed in solar cells.

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