Plasmonically Enhanced Colloidal Quantum Dot/Graphene Doped Polymer Random Lasers

Mingxuan Cao; Min Wang; Zhiwen Wang; Luhao Zang; Hao Liu; Shuping Xiao; Matthew M.F. Yuen; Ying Wang; Yating Zhang; Jianquan Yao

doi:10.3390/ma15062213

Plasmonically Enhanced Colloidal Quantum Dot/Graphene Doped Polymer Random Lasers

Mingxuan Cao^*, Min Wang, Zhiwen Wang, Luhao Zang, Hao Liu^*, Shuping Xiao, Matthew M.F. Yuen, Ying Wang, Yating Zhang, Jianquan Yao

^*Corresponding author for this work

Department of Mechanical and Aerospace Engineering

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

4 Citations (Scopus)

Abstract

An improvement in random lasers based on a colloidal quantum dot (QD)/graphene-doped polymer was observed and attributed to multiple light-scattering and graphene surface plasmon resonance. The emission characteristics of quantum dots doped with graphene oxide and reduced graphene oxide were compared. The QD/reduced graphene oxide hybrid exhibited a lower laser emission threshold (~460 µJ/cm²). The emission modes and thresholds were strongly dependent on both the graphene doping concentration and the external temperature. Decreased plasmon coupling was the primary reason for lower QD/graphene laser emission with increasing temperature. The optimum reduced graphene oxide concentration was 0.2 wt.%. This work provides a practical approach to optimizing the threshold and stability of random laser devices, with potential applications in displays, sensors, and anti-counterfeiting labels.

Original language	English
Article number	2213
Journal	Materials
Volume	15
Issue number	6
DOIs	https://doi.org/10.3390/ma15062213
Publication status	Published - 1 Mar 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

colloidal quantum dot
graphene
random laser
surface plasmon resonance

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10.3390/ma15062213

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title = "Plasmonically Enhanced Colloidal Quantum Dot/Graphene Doped Polymer Random Lasers",

abstract = "An improvement in random lasers based on a colloidal quantum dot (QD)/graphene-doped polymer was observed and attributed to multiple light-scattering and graphene surface plasmon resonance. The emission characteristics of quantum dots doped with graphene oxide and reduced graphene oxide were compared. The QD/reduced graphene oxide hybrid exhibited a lower laser emission threshold (\textasciitilde{}460 µJ/cm2). The emission modes and thresholds were strongly dependent on both the graphene doping concentration and the external temperature. Decreased plasmon coupling was the primary reason for lower QD/graphene laser emission with increasing temperature. The optimum reduced graphene oxide concentration was 0.2 wt.\%. This work provides a practical approach to optimizing the threshold and stability of random laser devices, with potential applications in displays, sensors, and anti-counterfeiting labels.",

keywords = "colloidal quantum dot, graphene, random laser, surface plasmon resonance",

author = "Mingxuan Cao and Min Wang and Zhiwen Wang and Luhao Zang and Hao Liu and Shuping Xiao and Yuen, \{Matthew M.F.\} and Ying Wang and Yating Zhang and Jianquan Yao",

note = "Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2022",

month = mar,

day = "1",

doi = "10.3390/ma15062213",

language = "English",

volume = "15",

journal = "Materials",

issn = "1996-1944",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "6",

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TY - JOUR

T1 - Plasmonically Enhanced Colloidal Quantum Dot/Graphene Doped Polymer Random Lasers

AU - Cao, Mingxuan

AU - Wang, Min

AU - Wang, Zhiwen

AU - Zang, Luhao

AU - Liu, Hao

AU - Xiao, Shuping

AU - Yuen, Matthew M.F.

AU - Wang, Ying

AU - Zhang, Yating

AU - Yao, Jianquan

PY - 2022/3/1

Y1 - 2022/3/1

N2 - An improvement in random lasers based on a colloidal quantum dot (QD)/graphene-doped polymer was observed and attributed to multiple light-scattering and graphene surface plasmon resonance. The emission characteristics of quantum dots doped with graphene oxide and reduced graphene oxide were compared. The QD/reduced graphene oxide hybrid exhibited a lower laser emission threshold (~460 µJ/cm2). The emission modes and thresholds were strongly dependent on both the graphene doping concentration and the external temperature. Decreased plasmon coupling was the primary reason for lower QD/graphene laser emission with increasing temperature. The optimum reduced graphene oxide concentration was 0.2 wt.%. This work provides a practical approach to optimizing the threshold and stability of random laser devices, with potential applications in displays, sensors, and anti-counterfeiting labels.

AB - An improvement in random lasers based on a colloidal quantum dot (QD)/graphene-doped polymer was observed and attributed to multiple light-scattering and graphene surface plasmon resonance. The emission characteristics of quantum dots doped with graphene oxide and reduced graphene oxide were compared. The QD/reduced graphene oxide hybrid exhibited a lower laser emission threshold (~460 µJ/cm2). The emission modes and thresholds were strongly dependent on both the graphene doping concentration and the external temperature. Decreased plasmon coupling was the primary reason for lower QD/graphene laser emission with increasing temperature. The optimum reduced graphene oxide concentration was 0.2 wt.%. This work provides a practical approach to optimizing the threshold and stability of random laser devices, with potential applications in displays, sensors, and anti-counterfeiting labels.

KW - colloidal quantum dot

KW - graphene

KW - random laser

KW - surface plasmon resonance

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000774962300001

UR - https://openalex.org/W4220867955

UR - https://www.scopus.com/pages/publications/85127036168

U2 - 10.3390/ma15062213

DO - 10.3390/ma15062213

M3 - Journal Article

SN - 1996-1944

VL - 15

JO - Materials

JF - Materials

IS - 6

M1 - 2213

ER -

Plasmonically Enhanced Colloidal Quantum Dot/Graphene Doped Polymer Random Lasers

Abstract

Bibliographical note

Keywords

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