Comparative energy levels analysis of Type I and Type II silicon clathrate films

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发表日期：

2024年12月4日

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Anil Kumar Bharwal,
Maxime Hanauer,
Charif Tamin,
Romain Vollondat,
Stéphane Roques,
Jérémy Bartringer,
Daniel Stoeffler,
Céline Chevalier,
Aziz Dinia,
Abdelilah Slaoui,
Thomas Fix

摘要

The two primary forms of silicon clathrates are Type I (Na₈Si₄₆) and Type II (Na_xSi₁₃₆). Both forms have been investigated for diverse silicon-based optoelectronic applications owing to their unique characteristics and cage-like structure. Determining the energy levels of these clathrates is crucial for device manufacturing, particularly because Type I clathrates display metallic characteristics and Type II clathrates are either semiconductors or metal depending on sodium “x” content. In this study, we established the energy levels of both Type I and Type II silicon clathrates. This offers crucial information for customizing these materials to meet specific optoelectronic device application requirements.

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