【作者】 马逊；

【导师】 刘祖明；

【作者基本信息】 云南师范大学 ， 农业生物环境与能源工程， 2005， 硕士

【摘要】 本文通过对测试少数载流子寿命的各种方法进行分析后提出了一种新的测量成品太阳电池基区少数载流子寿命的方法,这种方法通过分析太阳电池的Ⅰ-Ⅴ特性得到基区少数载流子寿命与太阳电池开路电压、短路电流的关系。同时考虑了串联电阻、并联电阻对开路电压、短路电流的影响,得到了太阳电池基区少数载流子寿命与开路电压、短路电流、串联电阻和并联电阻的关系。通过测试成品电池的Ⅰ-Ⅴ特性得到开路电压、短路电流、串联电阻和并联电阻的值,计算得到饱和暗电流和太阳电池基区少数载流子寿命。这种测量是在电池制备完成后进行的。 该方法的特点是,可以结合准稳态光电导测试方法共同监控工艺过程中的少数载流子寿命变化,从而完善了太阳电池工艺过程中少数载流子寿命的全程监控。 本论文实验部分完全按照工业化流程在不同的条件下制作太阳电池,在每一步流程后监控太阳电池少数载流子寿命,得到了较为优化的扩散条件和氧化条件。通过实验对比验证了该方法是可行的。该测量方法完善了在太阳电池工艺过程中对少数载流子寿命变化的监控。更多还原

【Abstract】 It is a new technique that using I-V character to measure minority lifetime in solar cell base region for finished solar cells. The method is acquired by analyzing the relationship of carrier lifetime and short circuit current and open circuit voltage. Through measuring I-V character of solar cells, short circuit current and open circuit voltage and series resistant and shunt resistant could be gained, and then minority carrier lifetime and dark saturation current are calculated by the new method.Specially, the new method can be used to monitor the solar cells minority carrier lifetime with QSSpc during manufactured processing.That made minority carrier lifetime monitored in the whole manufactured processes pefectly.In our experiments, solar cells are manufactured according to stand industrial processes, and minority carrier lifetime is measured after each process to optimize diffusion conditions and oxidation conditions. The new method has been proved feasible by experimental contrast to measure base region minority carrier lifetime of solar cell. The new method could monitor manufacture processes perfectly.更多还原