Sensitive Explosive Vapor Detection with Polyfluorene Lasers

Ying Yang; Graham A. Turnbull; Ifor David William Samuel

doi:10.1002/adfm.200901904

Sensitive Explosive Vapor Detection with Polyfluorene Lasers

Ying Yang, Graham A. Turnbull, Ifor David William Samuel

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

Abstract

Distributed feedback organic semiconductor lasers based on polyfluorene are shown to be suitable for use as chemical sensors for the detection of nitroaromatic-based explosive vapors. The laser threshold is increased by a factor of 1.8 and the slope efficiency is reduced by a factor of 3 after exposure to the vapor. The sensing efficiency depends strongly on the excitation energy with a maximum efficiency of 85%. The temporal dynamics of the laser response to the analyte have been investigated. The laser emission falls to 60% of its initial value in 46s. A model is developed to offer some insight into the diffusion of the vapor molecules inside the polymer layer.

Original language	English
Pages (from-to)	2093-2097
Number of pages	5
Journal	Advanced Functional Materials
Volume	20
Issue number	13
DOIs	https://doi.org/10.1002/adfm.200901904
Publication status	Published - 9 Jul 2010

Keywords

DISTRIBUTED-FEEDBACK LASER
CASE-II DIFFUSION
CONJUGATED POLYMERS
CONDUCTING POLYMER
OPTICAL GAIN
SPECTROSCOPY
SENSORS
FILMS
DYE

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title = "Sensitive Explosive Vapor Detection with Polyfluorene Lasers",

abstract = "Distributed feedback organic semiconductor lasers based on polyfluorene are shown to be suitable for use as chemical sensors for the detection of nitroaromatic-based explosive vapors. The laser threshold is increased by a factor of 1.8 and the slope efficiency is reduced by a factor of 3 after exposure to the vapor. The sensing efficiency depends strongly on the excitation energy with a maximum efficiency of 85%. The temporal dynamics of the laser response to the analyte have been investigated. The laser emission falls to 60% of its initial value in 46s. A model is developed to offer some insight into the diffusion of the vapor molecules inside the polymer layer.",

keywords = "DISTRIBUTED-FEEDBACK LASER, CASE-II DIFFUSION, CONJUGATED POLYMERS, CONDUCTING POLYMER, OPTICAL GAIN, SPECTROSCOPY, SENSORS, FILMS, DYE",

author = "Ying Yang and Turnbull, {Graham A.} and Samuel, {Ifor David William}",

year = "2010",

month = jul,

day = "9",

doi = "10.1002/adfm.200901904",

language = "English",

volume = "20",

pages = "2093--2097",

journal = "Advanced Functional Materials",

issn = "1616-301X",

publisher = "John Wiley & Sons, Ltd",

number = "13",

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TY - JOUR

T1 - Sensitive Explosive Vapor Detection with Polyfluorene Lasers

AU - Yang, Ying

AU - Turnbull, Graham A.

AU - Samuel, Ifor David William

PY - 2010/7/9

Y1 - 2010/7/9

N2 - Distributed feedback organic semiconductor lasers based on polyfluorene are shown to be suitable for use as chemical sensors for the detection of nitroaromatic-based explosive vapors. The laser threshold is increased by a factor of 1.8 and the slope efficiency is reduced by a factor of 3 after exposure to the vapor. The sensing efficiency depends strongly on the excitation energy with a maximum efficiency of 85%. The temporal dynamics of the laser response to the analyte have been investigated. The laser emission falls to 60% of its initial value in 46s. A model is developed to offer some insight into the diffusion of the vapor molecules inside the polymer layer.

AB - Distributed feedback organic semiconductor lasers based on polyfluorene are shown to be suitable for use as chemical sensors for the detection of nitroaromatic-based explosive vapors. The laser threshold is increased by a factor of 1.8 and the slope efficiency is reduced by a factor of 3 after exposure to the vapor. The sensing efficiency depends strongly on the excitation energy with a maximum efficiency of 85%. The temporal dynamics of the laser response to the analyte have been investigated. The laser emission falls to 60% of its initial value in 46s. A model is developed to offer some insight into the diffusion of the vapor molecules inside the polymer layer.

KW - DISTRIBUTED-FEEDBACK LASER

KW - CASE-II DIFFUSION

KW - CONJUGATED POLYMERS

KW - CONDUCTING POLYMER

KW - OPTICAL GAIN

KW - SPECTROSCOPY

KW - SENSORS

KW - FILMS

KW - DYE

U2 - 10.1002/adfm.200901904

DO - 10.1002/adfm.200901904

M3 - Article

SN - 1616-301X

VL - 20

SP - 2093

EP - 2097

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 13

ER -

Sensitive Explosive Vapor Detection with Polyfluorene Lasers

Abstract

Keywords

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