Effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well structures

Seoung Hwan Park, Yong Hee Cho, Mun Bo Shim, Sungjin Kim, Chang Young Park, Y. Eugene Pak, Dhaneshwar Mishra, Seung Hyun Yoo, Keonwook Kang

Research output: Contribution to journalArticle

Abstract

The effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well (QW) structures with a reduced internal field were investigated by using the non-Markovian model with many-body effects. The AlInGaN/InGaN system has a larger matrix element than the conventional InGaN/GaN system because the former has a smaller internal field than the latter for relatively small crystal angles. As a result, for QW structures with a relatively small crystal angle (θ = 30°), the AlInGaN/InGaN system is shown to have a much larger optical gain than the conventional InGaN/GaN system. On the other hand, in the case of QW structures with a large crystal angle (θ = 90°), the AlInGaN/InGaN system is shown to have a smaller optical gain than the conventional InGaN/GaN system. Hence, we expect that we can obtain high-efficiency optoelectronic devices by using quaternary AlInGaN QW for relatively small crystal angles.

Original languageEnglish
Pages (from-to)457-461
Number of pages5
JournalJournal of the Korean Physical Society
Volume65
Issue number4
DOIs
Publication statusPublished - 2014 Sep 1

Fingerprint

quantum wells
crystals
optoelectronic devices
matrices

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Park, Seoung Hwan ; Cho, Yong Hee ; Shim, Mun Bo ; Kim, Sungjin ; Park, Chang Young ; Pak, Y. Eugene ; Mishra, Dhaneshwar ; Yoo, Seung Hyun ; Kang, Keonwook. / Effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well structures. In: Journal of the Korean Physical Society. 2014 ; Vol. 65, No. 4. pp. 457-461.
@article{cfcffe05d68147ceb7acceb52ac5fc98,
title = "Effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well structures",
abstract = "The effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well (QW) structures with a reduced internal field were investigated by using the non-Markovian model with many-body effects. The AlInGaN/InGaN system has a larger matrix element than the conventional InGaN/GaN system because the former has a smaller internal field than the latter for relatively small crystal angles. As a result, for QW structures with a relatively small crystal angle (θ = 30°), the AlInGaN/InGaN system is shown to have a much larger optical gain than the conventional InGaN/GaN system. On the other hand, in the case of QW structures with a large crystal angle (θ = 90°), the AlInGaN/InGaN system is shown to have a smaller optical gain than the conventional InGaN/GaN system. Hence, we expect that we can obtain high-efficiency optoelectronic devices by using quaternary AlInGaN QW for relatively small crystal angles.",
author = "Park, {Seoung Hwan} and Cho, {Yong Hee} and Shim, {Mun Bo} and Sungjin Kim and Park, {Chang Young} and Pak, {Y. Eugene} and Dhaneshwar Mishra and Yoo, {Seung Hyun} and Keonwook Kang",
year = "2014",
month = "9",
day = "1",
doi = "10.3938/jkps.65.457",
language = "English",
volume = "65",
pages = "457--461",
journal = "Journal of the Korean Physical Society",
issn = "0374-4884",
publisher = "Korean Physical Society",
number = "4",

}

Effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well structures. / Park, Seoung Hwan; Cho, Yong Hee; Shim, Mun Bo; Kim, Sungjin; Park, Chang Young; Pak, Y. Eugene; Mishra, Dhaneshwar; Yoo, Seung Hyun; Kang, Keonwook.

In: Journal of the Korean Physical Society, Vol. 65, No. 4, 01.09.2014, p. 457-461.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well structures

AU - Park, Seoung Hwan

AU - Cho, Yong Hee

AU - Shim, Mun Bo

AU - Kim, Sungjin

AU - Park, Chang Young

AU - Pak, Y. Eugene

AU - Mishra, Dhaneshwar

AU - Yoo, Seung Hyun

AU - Kang, Keonwook

PY - 2014/9/1

Y1 - 2014/9/1

N2 - The effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well (QW) structures with a reduced internal field were investigated by using the non-Markovian model with many-body effects. The AlInGaN/InGaN system has a larger matrix element than the conventional InGaN/GaN system because the former has a smaller internal field than the latter for relatively small crystal angles. As a result, for QW structures with a relatively small crystal angle (θ = 30°), the AlInGaN/InGaN system is shown to have a much larger optical gain than the conventional InGaN/GaN system. On the other hand, in the case of QW structures with a large crystal angle (θ = 90°), the AlInGaN/InGaN system is shown to have a smaller optical gain than the conventional InGaN/GaN system. Hence, we expect that we can obtain high-efficiency optoelectronic devices by using quaternary AlInGaN QW for relatively small crystal angles.

AB - The effects of crystal orientation on the optical gain characteristics of blue AlInGaN/InGaN quantum-well (QW) structures with a reduced internal field were investigated by using the non-Markovian model with many-body effects. The AlInGaN/InGaN system has a larger matrix element than the conventional InGaN/GaN system because the former has a smaller internal field than the latter for relatively small crystal angles. As a result, for QW structures with a relatively small crystal angle (θ = 30°), the AlInGaN/InGaN system is shown to have a much larger optical gain than the conventional InGaN/GaN system. On the other hand, in the case of QW structures with a large crystal angle (θ = 90°), the AlInGaN/InGaN system is shown to have a smaller optical gain than the conventional InGaN/GaN system. Hence, we expect that we can obtain high-efficiency optoelectronic devices by using quaternary AlInGaN QW for relatively small crystal angles.

UR - http://www.scopus.com/inward/record.url?scp=84907608179&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907608179&partnerID=8YFLogxK

U2 - 10.3938/jkps.65.457

DO - 10.3938/jkps.65.457

M3 - Article

AN - SCOPUS:84907608179

VL - 65

SP - 457

EP - 461

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - 4

ER -