Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs
We use eight-band k·p energy band structure model to help design novel GaInSb/AlGaInSb mid-infrared multiple quantum well (MQW) structures with an emitting mid-infrared waveband of 4-5 μm. Simulation results suggest that the number of quantum wells has little influence on the spontaneous emission ra...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Online Access: | https://hdl.handle.net/10356/89246 http://hdl.handle.net/10220/46196 |
| _version_ | 1811682963149029376 |
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| author | Ding, Ying Meriggi, Laura Steer, Matthew Fan, Weijun Bulashevich, Kirill Thayne, Iain Macgregor, Calum Ironside, Charlie Sorel, Marc |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Ding, Ying Meriggi, Laura Steer, Matthew Fan, Weijun Bulashevich, Kirill Thayne, Iain Macgregor, Calum Ironside, Charlie Sorel, Marc |
| author_sort | Ding, Ying |
| collection | NTU |
| description | We use eight-band k·p energy band structure model to help design novel GaInSb/AlGaInSb mid-infrared multiple quantum well (MQW) structures with an emitting mid-infrared waveband of 4-5 μm. Simulation results suggest that the number of quantum wells has little influence on the spontaneous emission rate and gain because of no strong coupling between quantum wells and they just simply follow scaling laws. The SiLENSe software module from STR-soft is used to investigate injection efficiency of the designed MQW structures. Simulation results indicate that the MQW structures offer better carrier confinement i.e. higher carrier injection efficiency compared with traditional bulk active regions which are currently used for mid-infrared LEDs and sensors. Experimental investigations show that the MQW LEDs with a seven wells structure show an increase of a factor 2 in wall plug efficiency and output power compared with conventional bulk LEDs at the same wavelength. |
| first_indexed | 2024-10-01T04:05:11Z |
| format | Journal Article |
| id | ntu-10356/89246 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:05:11Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/892462020-03-07T14:02:37Z Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs Ding, Ying Meriggi, Laura Steer, Matthew Fan, Weijun Bulashevich, Kirill Thayne, Iain Macgregor, Calum Ironside, Charlie Sorel, Marc School of Electrical and Electronic Engineering LEDs DRNTU::Engineering::Electrical and electronic engineering Multiple Quantum Well We use eight-band k·p energy band structure model to help design novel GaInSb/AlGaInSb mid-infrared multiple quantum well (MQW) structures with an emitting mid-infrared waveband of 4-5 μm. Simulation results suggest that the number of quantum wells has little influence on the spontaneous emission rate and gain because of no strong coupling between quantum wells and they just simply follow scaling laws. The SiLENSe software module from STR-soft is used to investigate injection efficiency of the designed MQW structures. Simulation results indicate that the MQW structures offer better carrier confinement i.e. higher carrier injection efficiency compared with traditional bulk active regions which are currently used for mid-infrared LEDs and sensors. Experimental investigations show that the MQW LEDs with a seven wells structure show an increase of a factor 2 in wall plug efficiency and output power compared with conventional bulk LEDs at the same wavelength. Published version 2018-10-02T09:26:58Z 2019-12-06T17:21:05Z 2018-10-02T09:26:58Z 2019-12-06T17:21:05Z 2016 Journal Article Ding, Y., Meriggi, L., Steer, M., Fan, W., Bulashevich, K., Thayne, I., ... Sorel, M. (2016). Design, Simulations, and Optimizations of Mid-infrared Multiple Quantum Well LEDs. Procedia Engineering, 140, 36-42. doi : 10.1016/j.proeng.2015.10.153 1877-7058 https://hdl.handle.net/10356/89246 http://hdl.handle.net/10220/46196 10.1016/j.proeng.2015.10.153 en Procedia Engineering © 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/). Selection and/or peer-review under responsibility of the scientific committee of Symposium 2015 ICMAT 7 p. application/pdf |
| spellingShingle | LEDs DRNTU::Engineering::Electrical and electronic engineering Multiple Quantum Well Ding, Ying Meriggi, Laura Steer, Matthew Fan, Weijun Bulashevich, Kirill Thayne, Iain Macgregor, Calum Ironside, Charlie Sorel, Marc Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs |
| title | Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs |
| title_full | Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs |
| title_fullStr | Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs |
| title_full_unstemmed | Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs |
| title_short | Design, simulations, and optimizations of mid-infrared multiple quantum well LEDs |
| title_sort | design simulations and optimizations of mid infrared multiple quantum well leds |
| topic | LEDs DRNTU::Engineering::Electrical and electronic engineering Multiple Quantum Well |
| url | https://hdl.handle.net/10356/89246 http://hdl.handle.net/10220/46196 |
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