| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5402092 | Journal of Luminescence | 2011 | 4 Pages |
Abstract
The tunability of the emission energy, oscillator strength and photoluminescence (PL) efficiency by varying the well thickness and excitation density was demonstrated in the ZnSe0.8Te0.2/ZnSe multiple quantum wells. A significant blueshift about 260Â meV of the PL peak energy was observed as the well width decreased from 5 to 1Â nm. An extraordinary long lifetime (300Â ns) of the recombination for the widest sample was detected. The binding energy of the indirect excitons is determined as 12Â meV for the thinnest sample. The reduction of PL efficiency by thermal energy is greatly suppressed by employing a high excitation power.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Chin-Hau Chia, Wen-Chung Fan, Yen-Chen Lin, Wu-Ching Chou,