High-performance nanowire ultraviolet light-emitting diodes with potassium hydroxide and ammonium sulfide surface passivation
Document Type
Article
Publication Date
8-20-2020
Abstract
Potassium hydroxide (KOH) and ammonium sulfide (NH4)2Sx have been used as a surface passivation treatment to improve the electrical and optical performance of AlGaN nanowire ultraviolet (UV) light-emitting diodes (LEDs). Enhancements in photoluminescence at 335 nm (49%), optical output power (65%), and electroluminescence (83%), with respect to the as-grown nanowire LED are recorded for the AlGaN nanowire UV LEDs with surface passivation. These enhancements are attributed to the reduced nonradiative recombination on the nanowire surfaces. This study provides a potential surface passivation approach to produce high-power AlGaN nanowire LEDs operating in the UV spectrum.
Identifier
85090749726 (Scopus)
Publication Title
Applied Optics
External Full Text Location
https://doi.org/10.1364/AO.400877
e-ISSN
21553165
ISSN
1559128X
PubMed ID
32902502
First Page
7352
Last Page
7356
Issue
24
Volume
59
Grant
1944312
Fund Ref
National Science Foundation
Recommended Citation
Bui, Ha Quoc Thang; Velpula, Ravi Teja; Jian, Barsha; Philip, Moab Rajan; Tong, Hien Duy; Lenka, Trupti Rajan; and Nguyen, Hieu Pham Trung, "High-performance nanowire ultraviolet light-emitting diodes with potassium hydroxide and ammonium sulfide surface passivation" (2020). Faculty Publications. 5081.
https://digitalcommons.njit.edu/fac_pubs/5081
