Efficiency enhancement of InGaN amber MQWs using nanopillar structures

Yiyu Ou; Daisuke Iida; Jin Liu; Kaiyu Wu; Kazuhiro Ohkawa; Anja Boisen; Paul Michael Petersen; Haiyan Ou

doi:10.1515/nanoph-2017-0057

Efficiency enhancement of InGaN amber MQWs using nanopillar structures

Yiyu Ou, Daisuke Iida, Jin Liu, Kaiyu Wu, Kazuhiro Ohkawa, Anja Boisen, Paul Michael Petersen, Haiyan Ou

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Abstract

We have investigated the use of nanopillar structures on high indium content InGaN amber multiple quantum well (MQW) samples to enhance the emission efficiency. A significant emission enhancement was observed which can be attributed to the enhancement of internal quantum efficiency and light extraction efficiency. The size-dependent strain relaxation effect was characterized by photoluminescence, Raman spectroscopy and time-resolved photoluminescence measurements. In addition, the light extraction efficiency of different MQW samples was studied by finite-different time-domain simulations. Compared to the as-grown sample, the nanopillar amber MQW sample with a diameter of 300 nm has demonstrated an emission enhancement by a factor of 23.8.

Original language	English (US)
Pages (from-to)	317-322
Number of pages	6
Journal	Nanophotonics
Volume	7
Issue number	1
DOIs	https://doi.org/10.1515/nanoph-2017-0057
State	Published - Sep 9 2017

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the Innovation Fund Denmark (project no. 4106-00018B). KW and AB acknowledge support from the Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN).

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https://repository.kaust.edu.sa/bitstream/10754/625476/1/%5bNanophotonics%5d%20Efficiency%20enhancement%20of%20InGaN%20amber%20MQWs%20using%20nanopillar%20structures.pdf

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@article{e0fcfcf0967b4c83807d750b0f2eb429,

title = "Efficiency enhancement of InGaN amber MQWs using nanopillar structures",

abstract = "We have investigated the use of nanopillar structures on high indium content InGaN amber multiple quantum well (MQW) samples to enhance the emission efficiency. A significant emission enhancement was observed which can be attributed to the enhancement of internal quantum efficiency and light extraction efficiency. The size-dependent strain relaxation effect was characterized by photoluminescence, Raman spectroscopy and time-resolved photoluminescence measurements. In addition, the light extraction efficiency of different MQW samples was studied by finite-different time-domain simulations. Compared to the as-grown sample, the nanopillar amber MQW sample with a diameter of 300 nm has demonstrated an emission enhancement by a factor of 23.8.",

author = "Yiyu Ou and Daisuke Iida and Jin Liu and Kaiyu Wu and Kazuhiro Ohkawa and Anja Boisen and Petersen, {Paul Michael} and Haiyan Ou",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by the Innovation Fund Denmark (project no. 4106-00018B). KW and AB acknowledge support from the Danish National Research Foundation and Villum Foundation{\textquoteright}s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN).",

year = "2017",

month = sep,

day = "9",

doi = "10.1515/nanoph-2017-0057",

language = "English (US)",

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journal = "Nanophotonics",

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T1 - Efficiency enhancement of InGaN amber MQWs using nanopillar structures

AU - Ou, Yiyu

AU - Iida, Daisuke

AU - Liu, Jin

AU - Wu, Kaiyu

AU - Ohkawa, Kazuhiro

AU - Boisen, Anja

AU - Petersen, Paul Michael

AU - Ou, Haiyan

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work was supported by the Innovation Fund Denmark (project no. 4106-00018B). KW and AB acknowledge support from the Danish National Research Foundation and Villum Foundation’s Center for Intelligent Drug Delivery and Sensing Using Microcontainers and Nanomechanics (IDUN).

PY - 2017/9/9

Y1 - 2017/9/9

N2 - We have investigated the use of nanopillar structures on high indium content InGaN amber multiple quantum well (MQW) samples to enhance the emission efficiency. A significant emission enhancement was observed which can be attributed to the enhancement of internal quantum efficiency and light extraction efficiency. The size-dependent strain relaxation effect was characterized by photoluminescence, Raman spectroscopy and time-resolved photoluminescence measurements. In addition, the light extraction efficiency of different MQW samples was studied by finite-different time-domain simulations. Compared to the as-grown sample, the nanopillar amber MQW sample with a diameter of 300 nm has demonstrated an emission enhancement by a factor of 23.8.

AB - We have investigated the use of nanopillar structures on high indium content InGaN amber multiple quantum well (MQW) samples to enhance the emission efficiency. A significant emission enhancement was observed which can be attributed to the enhancement of internal quantum efficiency and light extraction efficiency. The size-dependent strain relaxation effect was characterized by photoluminescence, Raman spectroscopy and time-resolved photoluminescence measurements. In addition, the light extraction efficiency of different MQW samples was studied by finite-different time-domain simulations. Compared to the as-grown sample, the nanopillar amber MQW sample with a diameter of 300 nm has demonstrated an emission enhancement by a factor of 23.8.

UR - http://hdl.handle.net/10754/625476

UR - https://www.degruyter.com/view/j/nanoph.ahead-of-print/nanoph-2017-0057/nanoph-2017-0057.xml

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U2 - 10.1515/nanoph-2017-0057

DO - 10.1515/nanoph-2017-0057

M3 - Article

SN - 2192-8614

VL - 7

SP - 317

EP - 322

JO - Nanophotonics

JF - Nanophotonics

IS - 1

ER -

Efficiency enhancement of InGaN amber MQWs using nanopillar structures

Abstract

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