Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Publication date | 2002 |
---|---|
Host publication | Physics and Simulation of Optoelectronic Devices X |
Editors | Peter Blood, Marek Osinski, Yasuhiko Arakawa |
Place of Publication | Bellingham, Wash. |
Publisher | SPIE-INT SOC OPTICAL ENGINEERING |
Pages | 70-78 |
Number of pages | 9 |
ISBN (print) | 0-8194-4385-9, 9780819443854 |
<mark>Original language</mark> | English |
Event | Conference on Physics and Simulation of Optoelectronic Devices X - SAN JOSE Duration: 21/01/2002 → 25/01/2002 |
Conference | Conference on Physics and Simulation of Optoelectronic Devices X |
---|---|
City | SAN JOSE |
Period | 21/01/02 → 25/01/02 |
Conference | Conference on Physics and Simulation of Optoelectronic Devices X |
---|---|
City | SAN JOSE |
Period | 21/01/02 → 25/01/02 |
Electroluminescence is reported for the first time from InAs0.75Sb0.25 quantum dot light emitting diodes. The quantum dots were grown from the liquid phase at 590 C on an InAs (100) substrate and embedded within the undoped active region of an InAs homojunction pin diode. At 4 K and 250 mA injection current, three transitions were identified, centred at 4.01, 3.80 and 3.63 mum, associated with the s, p and d states of the confined holes inside the quantum dot. Each of the transitions exhibits a blue shift with increasing injection current, but the electroluminescence results indicate the presence of a phonon bottleneck in these devices. The quantum dot electroluminescence was observed to persist up to room temperature.