Using tunnel junctions to grow monolithically integrated optically pumped semipolar III-nitride yellow quantum wells on top of electrically injected blue quantum wells

Stacy J. Kowsz, Erin C. Young, Benjamin P. Yonkee, Christopher D. Pynn, Robert M. Farrell, James S. Speck, Steven P. DenBaars, Shuji Nakamura

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We report a device that monolithically integrates optically pumped (20-21) III-nitride quantum wells (QWs) with 560 nm emission on top of electrically injected QWs with 450 nm emission. The higher temperature growth of the blue light-emitting diode (LED) was performed first, which prevented thermal damage to the higher indium content InGaN of the optically pumped QWs. A tunnel junction (TJ) was incorporated between the optically pumped and electrically injected QWs; this TJ enabled current spreading in the buried LED. Metalorganic chemical vapor deposition enabled the growth of InGaN QWs with high radiative efficiency, while molecular beam epitaxy was leveraged to achieve activated buried p-type GaN and the TJ. This initial device exhibited dichromatic optically polarized emission with a polarization ratio of 0.28. Future improvements in spectral distribution should enable phosphor-free polarized white light emission.
Original languageEnglish (US)
Pages (from-to)3841-3849
Number of pages9
JournalOptics Express
Volume25
Issue number4
DOIs
StatePublished - Feb 13 2017
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2022-06-08
Acknowledgements: Solid State Lighting and Energy Electronics Center (SSLEEC) at the University of California, Santa Barbara (UCSB); Solid State Lighting Program (SSLP), a collaboration between King Abdulaziz City for Science and Technology (KACST), King Abdullah University of Science and Technology (KAUST), and UCSB; National Science Foundation (NSF) National Nanotechnology Infrastructure Network (NNIN) (ECS-0335765); NSF Materials Research Science and Engineering Centers (MRSEC) Program (DMR-1121053); NSF Graduate Research Fellowship Program (DGE-1144085) The authors would like to thank the contributors to the open source Python color science package Colour, which is freely distributed under the New BSD License and was used to generate the CIE diagram and calculate CIE coordinates.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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