A broadband ultraviolet light source using GaN quantum dots formed on hexagonal truncated pyramid structures - Archive ouverte HAL Access content directly
Journal Articles Nanoscale Advances Year : 2020

A broadband ultraviolet light source using GaN quantum dots formed on hexagonal truncated pyramid structures

Jong-Hoi Cho
  • Function : Author
Seung-Hyuk Lim
  • Function : Author
Min-Ho Jang
  • Function : Author
Chulwon Lee
  • Function : Author
Hwan-Seop Yeo
  • Function : Author
Young Chul Sim
  • Function : Author
Je-Hyung Kim
  • Function : Author
Mathieu Leroux
  • Function : Author
Seoung-Hwan Park
  • Function : Author
Julien Brault
Yong-Hoon Cho
  • Function : Author

Abstract

A broadband ultraviolet light source using GaN quantum dots formed on hexagonal truncated pyramid structures Broadband ultraviolet (UV) emission has been achieved from the GaN quantum dots grown on diff erent facets of hexagonal truncated pyramidal structures. The GaN-based structures include both semipolar and polar facets, on which the intrinsic piezoelectric fi elds and the growth rates are diff erent. In addition, a strain is locally suppressed at the boundaries of the truncated pyramid structure. As a result, the emission wavelength of quantum dots on various facets and boundaries becomes quite diff erent, rendering a solid-state broadband UV light source with homogenerous intensity in a wide wavelength range.
Fichier principal
Vignette du fichier
2020-cho.pdf (1.27 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

hal-03034181 , version 1 (01-12-2020)

Identifiers

Cite

Jong-Hoi Cho, Seung-Hyuk Lim, Min-Ho Jang, Chulwon Lee, Hwan-Seop Yeo, et al.. A broadband ultraviolet light source using GaN quantum dots formed on hexagonal truncated pyramid structures. Nanoscale Advances, 2020, 2 (4), pp.1449-1455. ⟨10.1039/d0na00052c⟩. ⟨hal-03034181⟩
29 View
37 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More