Abstract
Unprecedented high-temperature operational stability of interfacial silicide-free ultraviolet-A multiple-quantum- disk AlGaN nanowire-based light-emitting diodes on metal is achieved and investigated. Reasonable variations in device operational parameters across a wide range of temperatures demonstrate the high quality of the layer interfaces and efficient carrier injection. We previously presented ultraviolet-A quantum-confined AlxGa1-xN/AlyGa1-yN nanowire-based light-emitting diodes and studied their steady-state electro- and photo- luminescent characteristics at room temperature. Herein, we significantly expand the scope of our previous work by investigating the operational stability of the device across a wide range of temperatures (-50-100°C) with conformal parylene-C deposition, forming a nanowire forest as a polymer/nanowire three-dimensional composite material. This work constitutes part of a larger study into the operational stability of ultraviolet light-emitting diode chemical sensors at a wide range of temperatures for operation in harsh environments such as in downhole oil exploration.
Original language | English (US) |
---|---|
Title of host publication | Gallium Nitride Materials and Devices XIV |
Publisher | SPIE-Intl Soc Optical Eng |
ISBN (Print) | 9781510624788 |
DOIs | |
State | Published - Mar 1 2019 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledged KAUST grant number(s): BAS/1/1614-01-01
Acknowledgements: The authors acknowledge the financial support of King Abdulaziz City for Science and Technology (KACST), grant no. KACST TIC R2-FP-008. This work was partially supported by King Abdullah University of Science and Technology (KAUST) baseline funding, BAS/1/1614-01-01, and MBE equipment funding, C/M-20000-12-001-77 and KCR/1/4055-01-01.