Witzigmann, Bernd and Tomamichel, Marco and Steiger, Sebastian and Veprek, Ratko G. and Kojima, Kazunobu and Schwarz, Ulrich T. (2008) Analysis of gain and luminescence in violet and blue GaInN-GaN quantum wells. IEEE JOURNAL OF QUANTUM ELECTRONICS, 44 (1-2). pp. 144-149. ISSN 0018-9197,
Full text not available from this repository. (Request a copy)Abstract
In this paper, gain in GaInN quantum wells with 8% and 19% indium is analyzed using a comparison of a microscopic model to experimental data. It is shown that localized valence states can explain the characteristics of the gain spectra, in particular the broadening features at the red side of the spectrum. From an analysis of experimental and simulation data, the nonradiative current component is extracted, and is shown to dominate the total current density at laser threshold operation. The increase of nonradiative current with density explains the drop in internal quantum efficiency in GaInN light-emitting diodes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRANSMISSION ELECTRON-MICROSCOPY; LIGHT-EMITTING DEVICES; OPTICAL GAIN; DIODE-LASERS; SEMICONDUCTORS; LOCALIZATION; SPECTRA; IMPACT; EXCITONS; ORIGIN; gain; gallium-nitride; laser; LED; simulation |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Nov 2020 12:16 |
| Last Modified: | 13 Nov 2020 12:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/31653 |
Actions (login required)
 |
View Item |
