Abstract
Here comes a report on the investigation of the energy transfer in InP-based tunnel injection structures, consisting of InAs/InAlGaAs quantum dashes (QDashes) and an InGaAs/InAlGaAs quantum well (QW), designed for 1.55 mu m emission at room temperature. Temperature dependent photoluminescence excitation (PLE) spectroscopy was used to experimentally confirm that the carriers created in the well reach the quantum dash layer by the tunneling through a thin InAlAs/InAlGaAs barrier and recombine there radiatively. A measurable QW-QDash energy transfer has been detected up to 130 K. The electronic structure of the whole complex system obtained by modulation spectroscopy exhibits full conformity with the PLE measurement results. (c) 2007 American Institute of Physics.
Original language | English |
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Article number | 081915 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 90 |
Issue number | 8 |
DOIs | |
Publication status | Published - 19 Feb 2007 |
Keywords
- DOT LASERS
- ROOM-TEMPERATURE
- THRESHOLD CURRENT
- HETEROSTRUCTURES
- GAAS