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III-nitride quantum dots for ultra-efficient solid-state lighting

Journal Article · · Laser & Photonics Reviews
 [1];  [1];  [2];  [2]
  1. Lehigh Univ., Bethlehem, PA (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

III-nitride light-emitting diodes (LEDs) and laser diodes (LDs) are ultimately limited in performance due to parasitic Auger recombination. For LEDs, the consequences are poor efficiencies at high current densities; for LDs, the consequences are high thresholds and limited efficiencies. Here, we present arguments for III-nitride quantum dots (QDs) as active regions for both LEDs and LDs, to circumvent Auger recombination and achieve efficiencies at higher current densities that are not possible with quantum wells. QD-based LDs achieve gain and thresholds at lower carrier densities before Auger recombination becomes appreciable. QD-based LEDs achieve higher efficiencies at higher currents because of higher spontaneous emission rates and reduced Auger recombination. The technical challenge is to control the size distribution and volume of the QDs to realize these benefits. In conclusion, if constructed properly, III-nitride light-emitting devices with QD active regions have the potential to outperform quantum well light-emitting devices, and enable an era of ultra-efficient solidstate lighting.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1259487
Alternate ID(s):
OSTI ID: 1401676
Report Number(s):
SAND2016-4540J; 640185
Journal Information:
Laser & Photonics Reviews, Journal Name: Laser & Photonics Reviews Journal Issue: 4 Vol. 10; ISSN 1863-8880
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (8)

Ultra-Broadband Optical Gain in III-Nitride Digital Alloys journal February 2018
An Empirical Model for GaN Light Emitters with Dot-in-Wire Polar Nanostructures journal January 2020
III‐Nitride Micro‐LEDs for Efficient Emissive Displays journal August 2019
RETRACTED ARTICLE: A Review on Nanoporous Gallium Nitride (NPGaN) Formation on P-Type Silicon Substrate with the Mather-type Plasma Focus Device (MPFD) journal April 2017
First-Principle Study of the Optical Properties of Dilute-P GaN1−xPx Alloys journal April 2018
Room temperature luminescence of passivated InGaN quantum dots formed by quantum-sized-controlled photoelectrochemical etching journal September 2018
Single photon emission from top-down etched III-nitride quantum dots journal January 2020
Characterization of InGaN quantum dots grown by metalorganic chemical vapor deposition journal October 2019

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