Repins I L, Egaas B, Mansfield L M, Contreras M A, Muzzillo C P, Beall C, Glynn S, Carapella J, Kuciauskas D
National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401-3305, USA.
Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA.
Rev Sci Instrum. 2015 Jan;86(1):013907. doi: 10.1063/1.4905535.
Fiber-fed time-resolved photoluminescence is demonstrated as a tool for immediate process feedback after deposition of the absorber layer for CuInxGa(1-x)Se2 and Cu2ZnSnSe4 photovoltaic devices. The technique uses a simplified configuration compared to typical laboratory time-resolved photoluminescence in the delivery of the exciting beam, signal collection, and electronic components. Correlation of instrument output with completed device efficiency is demonstrated over a large sample set. The extraction of the instrument figure of merit, depending on both the initial luminescence intensity and its time decay, is explained and justified. Limitations in the prediction of device efficiency by this method, including surface effect, are demonstrated and discussed.
光纤馈送时间分辨光致发光被证明是一种用于在沉积CuInxGa(1-x)Se2和Cu2ZnSnSe4光伏器件的吸收层后立即进行工艺反馈的工具。与典型实验室时间分辨光致发光在激发光束传输、信号收集和电子元件方面相比，该技术采用了简化配置。在大量样本集上展示了仪器输出与完整器件效率之间的相关性。解释并论证了取决于初始发光强度及其时间衰减的仪器品质因数的提取方法。证明并讨论了该方法在预测器件效率方面的局限性，包括表面效应。
