Determination of external quantum efficiency in semiconductors using pulsed power-dependent photoluminescence
| Autor: | Chengao Wang, Mansoor Sheik-Bahae |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Photoluminescence Materials science business.industry General Engineering Physics::Optics 02 engineering and technology Pulsed power 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics law.invention Semiconductor laser theory Semiconductor law Laser cooling 0103 physical sciences Optoelectronics Quantum efficiency Photonics 0210 nano-technology business |
| Zdroj: | Optical Engineering. 56:011106 |
| ISSN: | 0091-3286 |
| DOI: | 10.1117/1.oe.56.1.011106 |
| Popis: | External quantum efficiency (EQE) is a parameter widely used in various photonic devices. In laser refrigeration of solids, materials with high EQE are essential for achieving net cooling. Pulsed power-dependent photoluminescence measurement is developed and demonstrated to be a rapid and efficient tool to determine the EQE and screen the sample quality before the fabrication process for the application of laser cooling in semiconductors. EQE values obtained from this technique are shown to be consistent with results from other more precise, but time-consuming measurements for various samples at different temperatures. |
| Databáze: | OpenAIRE |
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