Lifetime spectroscopy of impurities in silicon solar cells

该项目旨在将最新开发的实验技术应用于表征硅中杂质的重要问题，重点放在太阳能电池的应用上。这些新的光谱技术基于载流子寿命测量，比大多数现有的方法更敏感，更不含糊。研究结果将在两个独立的方面对太阳能电池技术产生重要影响--第一，通过准确诊断标准硅太阳能电池中限制性能的杂质--第二，通过识别可能通过杂质光伏效应将电池性能提高到常规极限之外的特定杂质。

This project aims to apply recently developed experimental techniques to the important problem of characterising impurities in silicon, with a strong focus on solar cell applications. These new spectroscopic techniques, which are based on carrier lifetime measurements, are more sensitive and less ambiguous than most existing methods. The results will have important implications for solar cell technologies in two independent ways - firstly, by allowing accurate diagnosis of the performance-limiting impurities in standard silicon solar cells - and secondly, by identifying particular impurities which could boost cell performance beyond the conventional limit through the impurity photovoltaic effect.