Functional integrity and stable high-temperature operation of planarized ultraviolet-A AlxGa1−xN/AlyGa1−yN multiple-quantum-disk nanowire LEDs with charge-conduction promoting interlayer

Abdullah A. Alhamoud; Nasir Alfaraj; Davide Priante; Bilal Janjua; Abdullah A. Alatawi; Abdulrahman M. Albadri; Ahmed Y. Alyamani; Tien Khee Ng; Boon S. Ooi

doi:10.1117/12.2506210

1 March 2019 Functional integrity and stable high-temperature operation of planarized ultraviolet-A Al_xGa_1−xN/Al_yGa_1−yN multiple-quantum-disk nanowire LEDs with charge-conduction promoting interlayer

Abdullah A. Alhamoud, Nasir Alfaraj, Davide Priante, Bilal Janjua, Abdullah A. Alatawi, Abdulrahman M. Albadri, Ahmed Y. Alyamani, Tien Khee Ng, Boon S. Ooi

Author Affiliations +

Proceedings Volume 10918, Gallium Nitride Materials and Devices XIV; 109181X (2019) https://doi.org/10.1117/12.2506210
Event: SPIE OPTO, 2019, San Francisco, California, United States

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 Al_xGa_1-xN/Al_yGa_1-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.

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Abdullah A. Alhamoud, Nasir Alfaraj, Davide Priante, Bilal Janjua, Abdullah A. Alatawi, Abdulrahman M. Albadri, Ahmed Y. Alyamani, Tien Khee Ng, and Boon S. Ooi "Functional integrity and stable high-temperature operation of planarized ultraviolet-A Al_xGa_1−xN/Al_yGa_1−yN multiple-quantum-disk nanowire LEDs with charge-conduction promoting interlayer", Proc. SPIE 10918, Gallium Nitride Materials and Devices XIV, 109181X (1 March 2019); https://doi.org/10.1117/12.2506210

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