Quantitative analysis of trace elements in solar cells by energy dispersive and cathodoluminescence spectroscopies
Gatan instrument used
The Monarc® Pro cathodoluminescence (CL) system and EDAX Octane Elite energy dispersive x-ray spectroscopy (EDS) detector enable precise analysis of composition and crystal structure with simultaneous spectral mapping.
Background
The adoption of thin-film solar cells is a critical component of the government’s energy reduction plans. However, there remains a large opportunity to improve the efficiency of these devices by developing a greater understanding and control of the composition and crystal structure of (e.g.,) CdTe/CdSeTe devices. However, there are no single techniques that provide a comprehensive understanding of these materials, thus requiring multi-modal analysis using EDS and luminescence techniques such as CL. We present a novel method for simultaneous capture and analysis of EDS and CL spectroscopic data to reveal the distribution of Se down to trace levels.
