中文摘要：

在硅晶体中利用微合金化来获取性能优良的晶硅电池是其未来发展的重要方向。微舍金化过程中，在硅中加入其它元素，带来硅晶体晶格畸变而易捕获空位，增加氧沉淀浓度、减少间隙氧含量，能抑制B-O复合体形成，从而改善硅晶体机械强度、提高少子寿命以及提高晶硅电池光电转化效率、抑制光致衰减效应。重点分析了Si-Ge、Si-Ga、Si—Sn、Si-Al和Si-In微合金化在晶体硅太阳能电池中的应用，通过微合金化能够满足人们对高质量晶硅电池的要求。掌握微合金化对晶硅电池性能影响的机理，并将其运用于实际生产中是目前急需解决的问题。

英文摘要：

The application of microalloying in crystalline silicon to get high-quality silicon-based solar cells is an important development direction in the future. Adding another element into crystalline silicon induces lattice distortion of crystalline silicon which can trap vacancies, increase the density of oxygen precipitation and reduce the density of oxygen interstitial, thus resulting in the suppression of the form of PrO pairs. So mechanical property and minority carrier lifetime of silicon and conversion efficiency of silicon-based solar cells can be improved and light-induced degra- dation effect can be decreased. Much attention has been paid on the researches of the application of Si-Ge, Si-Ga, Si- Sn, Si-A1 and Si-In microalloying which can meet needs for high-quality silicon-based solar cells. Presently, under- standing the mechanism of microalloying in silicon-based solar cell and realizing industrial application are urgent issues for the domain.