EFFICIENCY IMPROVEMENT OF POLYCRYSTALLINE SILICON SOLAR CELLS

多晶硅太阳能电池效率的提高

• 批准号: 59850006
• 负责人: TAKEUCHI Toshio
• 金额: $ 1.22万
• 依托单位: Sendai National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1984
• 资助国家: 日本
• 起止时间: 1984 至 1985
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-59850006/
• 关键词: Polycrystalline silicon; Solar cells; Grain boundariespassivation; 不動態化

Preparation of silcon films for solar cells; Preparation conditions of silicon thin films by the method of melt quenching were experimentally clarified especially on the relation of film dimentions and preparation parameters. These parameters were ejection pressure, atmospheric pressure, disc rotation speed, preparation speed, disc materials and atmospheric gases. Hydrodynamic analysis well interpreted these experimental results quntitatively.Electronic density of states at grain boundaries; The electronic conductivities and temperature dependence of Hall mobilities were measured on the undoped and intentionally boron and phosphorus doped samples. Double schottky barrier model which made double depletion layers at grain boundaties and works as sink for the photogenerated carries and reduce the collection efficiency. Field dependent conductivites under DC bias voltage were well interpreted qualitatively as the carrier transport through the thermionic emission across over the grain boundaries potential barriers.Grain boundaries electric field observation technique; A new method to analize electrically active grain boundaries of polycrystalline silicon by using a field effect of nematic liquid crystal with positive dielectric anisotropy is developed.Plasma passivation of grain boundaries were experimentally recognized.

太阳电池用硅碳化硅薄膜的制备实验阐明了熔体淬冷法制备硅薄膜的工艺条件，特别是薄膜尺寸与制备参数的关系。这些参数是喷射压力、大气压、圆盘转速、制备速度、圆盘材料和大气气体。流体力学分析很好地定量地解释了这些实验结果。测量了未掺杂和有意掺杂B、P样品的晶界电子态密度、电子电导和霍尔迁移率与温度的关系。双肖特基势垒模型在晶界形成双耗尽层，作为光生载流子的汇，降低了收集效率。将直流偏压下的场变导电性很好地解释为载流子通过热电子发射穿过晶界势垒的传输。晶界电场观察技术；发展了一种利用具有正介电各向异性的向列相液晶的场效应来分析多晶硅电活性晶界的新方法。实验识别了晶界的等离子体钝化。

项目成果

Abstract of The 10th Int.Liquid Crystal Conf. G-36. (1984)

第十届国际液晶大会摘要

Mol.Cryst.Lig.Cryst.127. (1985)

Mol.Cryst.Lig.Cryst.127。

Mol. Cryst. Liq. Cryst.127. (1985)

摩尔。

Abstract of The 2nd Asia Pasific Phisics Conf.(1986)

第二届亚太物理学会摘要(1986)

Abstract of The Tenth Int. Liquid Crystal Conf.G-36. (1984)

第十届国际摘要。