Electric field dependence of radiative recombination lifetimes in polar InGaN/GaN quantum heterostructures

Emre Sari, Sedat Nizamoglu, In-Hwan Lee, Jong Hyeob Baek, Hilmi Volkan Demir

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report on external electric field dependence of recombination lifetimes in polar InGaN/GaN quantum heterostructures. In our study, we apply external electric fields one order of magnitude less than and in opposite direction to the polarization-induced electrostatic fields inside the well layers. Under the increasing external electric field, we observe a decrease in carrier lifetimes (τ) and radiative recombination lifetimes (τr), latter showing a weaker dependence. Our results on τr show an agreement with our transfer matrix method based simulation results and demonstrate Fermi's golden rule in polar InGaN/GaN quantum heterostructures dependent on electric field. For our study, we grew 5 pairs of 2.5 nm thick In0.15Ga 0.85N quantum well and 7.5 nm thick GaN barrier layers in a p-i-n diode architecture using metal-organic chemical vapor deposition (MOCVD) on a c-plane sapphire substrate. Devices with 300 μm × 300 μm mesa size were fabricated using standard photolithography, reactive ion etching and metallization steps. We used indium-tin oxide (ITO) based semi-transparent contacts in top (p-GaN) layer for uniform application of electric field across the well layers. The fabricated devices were diced and mounted on a TO-can for compact testing.

Original languageEnglish
Title of host publication2009 IEEE LEOS Annual Meeting Conference Proceedings, LEOS '09
Pages606-607
Number of pages2
DOIs
Publication statusPublished - 2009 Dec 29
Externally publishedYes
Event2009 IEEE LEOS Annual Meeting Conference, LEOS '09 - Belek-Antalya, Turkey
Duration: 2009 Oct 42009 Oct 8

Publication series

NameConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
ISSN (Print)1092-8081

Other

Other2009 IEEE LEOS Annual Meeting Conference, LEOS '09
CountryTurkey
CityBelek-Antalya
Period09/10/409/10/8

Fingerprint

Heterojunctions
Electric fields
Organic Chemicals
Transfer matrix method
Carrier lifetime
Aluminum Oxide
Organic chemicals
Reactive ion etching
Photolithography
Metallizing
Tin oxides
Sapphire
Indium
Semiconductor quantum wells
Chemical vapor deposition
Diodes
Metals
Polarization
Testing
Substrates

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Sari, E., Nizamoglu, S., Lee, I-H., Baek, J. H., & Demir, H. V. (2009). Electric field dependence of radiative recombination lifetimes in polar InGaN/GaN quantum heterostructures. In 2009 IEEE LEOS Annual Meeting Conference Proceedings, LEOS '09 (pp. 606-607). [4311010] (Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS). https://doi.org/10.1109/LEOS.2009.53

Electric field dependence of radiative recombination lifetimes in polar InGaN/GaN quantum heterostructures. / Sari, Emre; Nizamoglu, Sedat; Lee, In-Hwan; Baek, Jong Hyeob; Demir, Hilmi Volkan.

2009 IEEE LEOS Annual Meeting Conference Proceedings, LEOS '09. 2009. p. 606-607 4311010 (Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sari, E, Nizamoglu, S, Lee, I-H, Baek, JH & Demir, HV 2009, Electric field dependence of radiative recombination lifetimes in polar InGaN/GaN quantum heterostructures. in 2009 IEEE LEOS Annual Meeting Conference Proceedings, LEOS '09., 4311010, Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, pp. 606-607, 2009 IEEE LEOS Annual Meeting Conference, LEOS '09, Belek-Antalya, Turkey, 09/10/4. https://doi.org/10.1109/LEOS.2009.53
Sari E, Nizamoglu S, Lee I-H, Baek JH, Demir HV. Electric field dependence of radiative recombination lifetimes in polar InGaN/GaN quantum heterostructures. In 2009 IEEE LEOS Annual Meeting Conference Proceedings, LEOS '09. 2009. p. 606-607. 4311010. (Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS). https://doi.org/10.1109/LEOS.2009.53
Sari, Emre ; Nizamoglu, Sedat ; Lee, In-Hwan ; Baek, Jong Hyeob ; Demir, Hilmi Volkan. / Electric field dependence of radiative recombination lifetimes in polar InGaN/GaN quantum heterostructures. 2009 IEEE LEOS Annual Meeting Conference Proceedings, LEOS '09. 2009. pp. 606-607 (Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS).
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