Feiyun Zhao

Defect‐Control Strategies for III–V Heteroepitaxy on Silicon

In silicon photonics, the direct heteroepitaxy of III–V materials on Si is a highly promising route toward on‐chip integration of high‐density active optoelectronic devices. However, an inherent conflict persists between the high threading dislocation density (TDD) created by lat...

Recent Advances in Infrared‐to‐Visible Upconversion Photodetectors: From Multi‐Dimensional Innovations to Future Perspectives

ABSTRACT Thin‐film infrared‐to‐visible upconversion photodetectors (UCDs) have emerged as a cost‐effective, pixel‐less paradigm for infrared (IR) visualization. This review first elucidates mainstream upconversion modalities, device configurations, and the physical principles of...