Quantum confinement of Te bound exciton in ZnSe/ZnSe1-xTex and ZnSe/Zn1-yCdySe quantum wells

Chu Shou Yang, Ming Chin Kuo, Yi Jen Lai, Kuan Cheng Chiu, Ji Lin Shen, Johnson Lee, Wu-Ching Chou*, Syang Ywan Jeng, Wen Ho Lan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The quantum confinements of an exciton bound to a single Te (X/Te) and to many Te (X/Ten) were observed for the first time in ZnSe/Zn1-yCdySe quantum wells with a thin ZnSe1-xTex (very low x<0.01) layer inserted at the center of a Zn1-yCdySe quantum well. The binding energies of X/Te for the 5.0, 2.5, and 1.4nm wells were 69, 81, and 83meV, respectively. In the case of ZnSe/ZnSe1-xTex quantum well structures, the quantum confinement of a deep energy level, Te cluster bound exciton, was investigated. Current results imply a tiny wave-function size for the X/Te, X/Ten, and exciton bound to a Te cluster.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalMaterials Chemistry and Physics
Volume81
Issue number1
DOIs
StatePublished - 20 Jul 2003

Keywords

  • Band structure
  • Molecular beam epitaxy
  • Photoluminescence spectroscopy
  • Quantum wells
  • ZnSeTe

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