Multi-Quantum-Well and Superlattice Mercuric-Telluride/ Cadmium-Telluride Structures at High Hydrostatic Pressures

点击翻译按钮获取中文摘要

The objective of this research is to advance the understanding of the fundamental and device properties of multi-quantum-well and superlattice structures fabricated from layers of mercury- telluride and cadmium-telluride. One will measure the optical absorption and photoluminescence under conditions of high hydrostatic pressure produced in diamond anvil cells. The changes in the intrinsic band structures of both HgTe and CdTe under pressure are well understood and thus large changes in the optical properties of the quantum wells and superlattices are anticipated and the results will permit a critical confrontation of theoretical predictions of the MQW and SL structures and the experimental results. The MQW and SL HgTe/CdTe samples will be provided by Prof. J. F. Schetzina of North Carolina State Univeristy. These are state-of-the-art molecular beam epitaxy grown samples which are well characterized by structural, electrical and optical measurements at ambient pressure.