Energy-dependent time-resolved photoluminescence of self-catalyzed inn nanocolumns

Fang I. Lai; Jui Fu Yang; Wei Chun Chen; Dan Hua Hsieh; Woei Tyng Lin; Yu Chao Hsu; Shou Yi Kuo

doi:10.3390/catal11060737

Energy-dependent time-resolved photoluminescence of self-catalyzed inn nanocolumns

Fang I. Lai, Jui Fu Yang, Wei Chun Chen, Dan Hua Hsieh, Woei Tyng Lin, Yu Chao Hsu, Shou Yi Kuo^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

2 Scopus citations

Abstract

In this study, we report the optical properties and carrier dynamics of different surface dimensionality n-type wurtzite InN with various carrier concentrations using photoluminescence (PL) and an energy-dependent, time-resolved photoluminescence (ED-TRPL) analysis. Experimental results indicated that the InN morphology can be controlled by the growth temperature, from one-dimensional (1D) nanorods to two-dimensional (2D) films. Moreover, donor-like nitrogen vacancy (V_N) is responsible for the increase in carrier concentration due to the lowest formation energies in the n-type InN samples. The PL results also reveal that the energies of emission peaks are higher in the InN samples with 2D features than that with 1D features. These anomalous transitions are explained as the recombination of Mahan excitons and localized holes, and further proved by a theoretical model, activation energy and photon energy-dependent lifetime analysis.

Original language	English
Article number	737
Journal	Catalysts
Volume	11
Issue number	6
DOIs	https://doi.org/10.3390/catal11060737
State	Published - 06 2021

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Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Indium nitride
Nanocolumns
Photoluminescence

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10.3390/catal11060737

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@article{7f525264fcfe42dda0cb63ccf15820c9,

title = "Energy-dependent time-resolved photoluminescence of self-catalyzed inn nanocolumns",

abstract = "In this study, we report the optical properties and carrier dynamics of different surface dimensionality n-type wurtzite InN with various carrier concentrations using photoluminescence (PL) and an energy-dependent, time-resolved photoluminescence (ED-TRPL) analysis. Experimental results indicated that the InN morphology can be controlled by the growth temperature, from one-dimensional (1D) nanorods to two-dimensional (2D) films. Moreover, donor-like nitrogen vacancy (VN) is responsible for the increase in carrier concentration due to the lowest formation energies in the n-type InN samples. The PL results also reveal that the energies of emission peaks are higher in the InN samples with 2D features than that with 1D features. These anomalous transitions are explained as the recombination of Mahan excitons and localized holes, and further proved by a theoretical model, activation energy and photon energy-dependent lifetime analysis.",

keywords = "Indium nitride, Nanocolumns, Photoluminescence",

author = "Lai, {Fang I.} and Yang, {Jui Fu} and Chen, {Wei Chun} and Hsieh, {Dan Hua} and Lin, {Woei Tyng} and Hsu, {Yu Chao} and Kuo, {Shou Yi}",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = jun,

doi = "10.3390/catal11060737",

language = "英语",

volume = "11",

journal = "Catalysts",

issn = "2073-4344",

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TY - JOUR

T1 - Energy-dependent time-resolved photoluminescence of self-catalyzed inn nanocolumns

AU - Lai, Fang I.

AU - Yang, Jui Fu

AU - Chen, Wei Chun

AU - Hsieh, Dan Hua

AU - Lin, Woei Tyng

AU - Hsu, Yu Chao

AU - Kuo, Shou Yi

PY - 2021/6

Y1 - 2021/6

N2 - In this study, we report the optical properties and carrier dynamics of different surface dimensionality n-type wurtzite InN with various carrier concentrations using photoluminescence (PL) and an energy-dependent, time-resolved photoluminescence (ED-TRPL) analysis. Experimental results indicated that the InN morphology can be controlled by the growth temperature, from one-dimensional (1D) nanorods to two-dimensional (2D) films. Moreover, donor-like nitrogen vacancy (VN) is responsible for the increase in carrier concentration due to the lowest formation energies in the n-type InN samples. The PL results also reveal that the energies of emission peaks are higher in the InN samples with 2D features than that with 1D features. These anomalous transitions are explained as the recombination of Mahan excitons and localized holes, and further proved by a theoretical model, activation energy and photon energy-dependent lifetime analysis.

AB - In this study, we report the optical properties and carrier dynamics of different surface dimensionality n-type wurtzite InN with various carrier concentrations using photoluminescence (PL) and an energy-dependent, time-resolved photoluminescence (ED-TRPL) analysis. Experimental results indicated that the InN morphology can be controlled by the growth temperature, from one-dimensional (1D) nanorods to two-dimensional (2D) films. Moreover, donor-like nitrogen vacancy (VN) is responsible for the increase in carrier concentration due to the lowest formation energies in the n-type InN samples. The PL results also reveal that the energies of emission peaks are higher in the InN samples with 2D features than that with 1D features. These anomalous transitions are explained as the recombination of Mahan excitons and localized holes, and further proved by a theoretical model, activation energy and photon energy-dependent lifetime analysis.

KW - Indium nitride

KW - Nanocolumns

KW - Photoluminescence

UR - http://www.scopus.com/inward/record.url?scp=85107877684&partnerID=8YFLogxK

U2 - 10.3390/catal11060737

DO - 10.3390/catal11060737

M3 - 文章

AN - SCOPUS:85107877684

SN - 2073-4344

VL - 11

JO - Catalysts

JF - Catalysts

IS - 6

M1 - 737

ER -

Energy-dependent time-resolved photoluminescence of self-catalyzed inn nanocolumns

Abstract

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Keywords

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