Abstract
Optically pumped stimulated emission is observed in a series of ZnS/Znl-xCdxS multiple quantum-well (MQW) structures, grown on GaP substrates by MBE. We report lasing from a ZnS/Zn0.97Cd0.03S MQW at wavelengths as low as 333nm, the shortest yet reported in a semiconductor heterostructure. The lasing threshold decreases for deeper wells and reaches 6.5 kW.cm-2 at 8K and 80 kW.cm-2 at 300K for the MWQs with a Cd-composition of 0.2. The results are compared to known values for similar structures grown on GaAs by MOCVD, which reveals the potential of the GaP-substrate MBE technology for the widest bandgap II-VI heterostructures incorporating ZnS-based ternary alloys. Copyright © 1996 Elsevier Science Ltd.
Original language | English |
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Pages (from-to) | 407-411 |
Number of pages | 4 |
Journal | Solid State Communications |
Volume | 99 |
Issue number | 6 |
DOIs | |
Publication status | Published - Aug 1996 |
Keywords
- A. Quantum wells
- A. Semiconductors
- B. Epitaxy
- D. Optical properties
- E. Luminescence