激光改善太阳能材料电学特性的研究

Electronic characteristics of solar material improved by laser processing

摘要: 在制备多晶硅太阳能电池材料的过程中,离子注入和机械加工往往使材料表层微结构产生缺陷,恶化了材料的电学性能,降低了少数载流子寿命。针对这一问题,本实验采用高功率CO2激光扫描硅材料,通过晶粒外延生长消除了缺陷,降低了材料表面方块电阻,提高了少数载流子寿命。本文还分析了激光扫描后材料的反型现象。
- 太阳能 /
- 方块电阻 /
- 少子寿命
Abstract: In process of making polycrystalline sillicon solar cell material,the microstructure defect of material surface worsenes electric character of material and reduces minority carrier life because of ion injecting and maching.To solve this problem,the sillicon material was scanned by high power CO2 laser,and crystal extension was obtained and defect was eliminated in experiment.The block resistance of material surface was reduced and minority carrier life was increased.The type reversal of material scanned by laser was also analysed.
- solar /
- block resistance /
- minority carrier life

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