Reduction in thermal droop using thick single-quantum-well structure in semipolar (2021) blue light-emitting diodes

Chih Chien Pan, Tao Gilbert, Nathan Pfaff, Shinichi Tanaka, Yuji Zhao, Daniel Feezell, James S. Speck, Shuji Nakamura, Steven P. DenBaars

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

We report on the thermal performance of the electroluminescence of 12-nm-thick single-quantum-well (SQW) InGaN blue light-emitting diodes (LEDs) grown on the semipolar (2021) plane. At a current density 100 A/cm 2, the external quantum efficiency (EQE) decreased by 9.7% when the temperature was increased from 20 to 100 °C. Hot/cold factors were more than 0.9 at current densities greater than 20 A/cm 2. A high characteristic temperature of 900 K and low junction temperature of 68 °C were also measured using bare LED chips.

Original languageEnglish (US)
Article number102103
JournalApplied Physics Express
Volume5
Issue number10
DOIs
StatePublished - Oct 2012
Externally publishedYes

Fingerprint

Semiconductor quantum wells
Light emitting diodes
light emitting diodes
quantum wells
Current density
current density
Electroluminescence
Quantum efficiency
electroluminescence
Temperature
temperature
quantum efficiency
chips
Hot Temperature

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Reduction in thermal droop using thick single-quantum-well structure in semipolar (2021) blue light-emitting diodes. / Pan, Chih Chien; Gilbert, Tao; Pfaff, Nathan; Tanaka, Shinichi; Zhao, Yuji; Feezell, Daniel; Speck, James S.; Nakamura, Shuji; DenBaars, Steven P.

In: Applied Physics Express, Vol. 5, No. 10, 102103, 10.2012.

Research output: Contribution to journalArticle

Pan, CC, Gilbert, T, Pfaff, N, Tanaka, S, Zhao, Y, Feezell, D, Speck, JS, Nakamura, S & DenBaars, SP 2012, 'Reduction in thermal droop using thick single-quantum-well structure in semipolar (2021) blue light-emitting diodes', Applied Physics Express, vol. 5, no. 10, 102103. https://doi.org/10.1143/APEX.5.102103
Pan, Chih Chien ; Gilbert, Tao ; Pfaff, Nathan ; Tanaka, Shinichi ; Zhao, Yuji ; Feezell, Daniel ; Speck, James S. ; Nakamura, Shuji ; DenBaars, Steven P. / Reduction in thermal droop using thick single-quantum-well structure in semipolar (2021) blue light-emitting diodes. In: Applied Physics Express. 2012 ; Vol. 5, No. 10.
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