Luminescent oxygen-sensing films with improved sensitivity based on light scattering by TiO2 particles

Chang Jin Lim, jin woo Park

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We investigated the effects of embedded titanium dioxide (TiO2) nanoparticles on the photocurrent and sensitivity of luminescent oxygen-sensing films based on platinum octaethylporphyrin (PtOEP), which is an indicator dye. The TiO2 nanoparticles acted as light-scattering centers in the sensing films, and the light-scattering performance was evaluated in relation to TiO2 nanoparticle diameter and crystal structure. In the presence of embedded light-scattering particles, the probabilities of PtOEP molecules encountering and being excited by light were expected to increase, resulting in improvement of the photoluminescence and sensitivity of the sensing films to oxygen gas. The diameter of the TiO2 nanoparticles was changed by laser irradiation while they were dispersed in acetone. Through the laser irradiation, the particle size of the TiO2 nanoparticles grew, and their morphology became spherical. The X-ray diffraction (XRD) analysis showed that the crystalline structure of the TiO2 nanoparticles changed in relation to its calcination temperature. The photocurrent and sensitivity of the sensing films with embedded TiO2 nanoparticles in relation to the oxygen gas concentration were measured using a green light-emitting diode (LED) as the light source and an Si photodiode as the photocurrent measuring device. Based on the results, it was confirmed that the photocurrent and sensitivity of the oxygen-sensing films were greatly improved with increases in the size and refractive index (n) of the embedded TiO2 nanoparticles. Furthermore, the improvements in the photocurrent and sensitivity of the oxygen-sensing films allowed the fabrication of a high-resolution oxygen-sensing film that can detect the oxygen distribution over large areas.

Original languageEnglish
Pages (from-to)934-941
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume253
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Light scattering
light scattering
Oxygen
Nanoparticles
Photocurrents
nanoparticles
sensitivity
photocurrents
oxygen
Laser beam effects
Platinum
platinum
Gases
irradiation
Acetone
Photodiodes
gases
titanium oxides
Calcination
roasting

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

@article{21a38ef227324e2ba80bbc4e468d33b9,
title = "Luminescent oxygen-sensing films with improved sensitivity based on light scattering by TiO2 particles",
abstract = "We investigated the effects of embedded titanium dioxide (TiO2) nanoparticles on the photocurrent and sensitivity of luminescent oxygen-sensing films based on platinum octaethylporphyrin (PtOEP), which is an indicator dye. The TiO2 nanoparticles acted as light-scattering centers in the sensing films, and the light-scattering performance was evaluated in relation to TiO2 nanoparticle diameter and crystal structure. In the presence of embedded light-scattering particles, the probabilities of PtOEP molecules encountering and being excited by light were expected to increase, resulting in improvement of the photoluminescence and sensitivity of the sensing films to oxygen gas. The diameter of the TiO2 nanoparticles was changed by laser irradiation while they were dispersed in acetone. Through the laser irradiation, the particle size of the TiO2 nanoparticles grew, and their morphology became spherical. The X-ray diffraction (XRD) analysis showed that the crystalline structure of the TiO2 nanoparticles changed in relation to its calcination temperature. The photocurrent and sensitivity of the sensing films with embedded TiO2 nanoparticles in relation to the oxygen gas concentration were measured using a green light-emitting diode (LED) as the light source and an Si photodiode as the photocurrent measuring device. Based on the results, it was confirmed that the photocurrent and sensitivity of the oxygen-sensing films were greatly improved with increases in the size and refractive index (n) of the embedded TiO2 nanoparticles. Furthermore, the improvements in the photocurrent and sensitivity of the oxygen-sensing films allowed the fabrication of a high-resolution oxygen-sensing film that can detect the oxygen distribution over large areas.",
author = "Lim, {Chang Jin} and Park, {jin woo}",
year = "2017",
month = "1",
day = "1",
doi = "10.1016/j.snb.2017.07.045",
language = "English",
volume = "253",
pages = "934--941",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",

}

Luminescent oxygen-sensing films with improved sensitivity based on light scattering by TiO2 particles. / Lim, Chang Jin; Park, jin woo.

In: Sensors and Actuators, B: Chemical, Vol. 253, 01.01.2017, p. 934-941.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Luminescent oxygen-sensing films with improved sensitivity based on light scattering by TiO2 particles

AU - Lim, Chang Jin

AU - Park, jin woo

PY - 2017/1/1

Y1 - 2017/1/1

N2 - We investigated the effects of embedded titanium dioxide (TiO2) nanoparticles on the photocurrent and sensitivity of luminescent oxygen-sensing films based on platinum octaethylporphyrin (PtOEP), which is an indicator dye. The TiO2 nanoparticles acted as light-scattering centers in the sensing films, and the light-scattering performance was evaluated in relation to TiO2 nanoparticle diameter and crystal structure. In the presence of embedded light-scattering particles, the probabilities of PtOEP molecules encountering and being excited by light were expected to increase, resulting in improvement of the photoluminescence and sensitivity of the sensing films to oxygen gas. The diameter of the TiO2 nanoparticles was changed by laser irradiation while they were dispersed in acetone. Through the laser irradiation, the particle size of the TiO2 nanoparticles grew, and their morphology became spherical. The X-ray diffraction (XRD) analysis showed that the crystalline structure of the TiO2 nanoparticles changed in relation to its calcination temperature. The photocurrent and sensitivity of the sensing films with embedded TiO2 nanoparticles in relation to the oxygen gas concentration were measured using a green light-emitting diode (LED) as the light source and an Si photodiode as the photocurrent measuring device. Based on the results, it was confirmed that the photocurrent and sensitivity of the oxygen-sensing films were greatly improved with increases in the size and refractive index (n) of the embedded TiO2 nanoparticles. Furthermore, the improvements in the photocurrent and sensitivity of the oxygen-sensing films allowed the fabrication of a high-resolution oxygen-sensing film that can detect the oxygen distribution over large areas.

AB - We investigated the effects of embedded titanium dioxide (TiO2) nanoparticles on the photocurrent and sensitivity of luminescent oxygen-sensing films based on platinum octaethylporphyrin (PtOEP), which is an indicator dye. The TiO2 nanoparticles acted as light-scattering centers in the sensing films, and the light-scattering performance was evaluated in relation to TiO2 nanoparticle diameter and crystal structure. In the presence of embedded light-scattering particles, the probabilities of PtOEP molecules encountering and being excited by light were expected to increase, resulting in improvement of the photoluminescence and sensitivity of the sensing films to oxygen gas. The diameter of the TiO2 nanoparticles was changed by laser irradiation while they were dispersed in acetone. Through the laser irradiation, the particle size of the TiO2 nanoparticles grew, and their morphology became spherical. The X-ray diffraction (XRD) analysis showed that the crystalline structure of the TiO2 nanoparticles changed in relation to its calcination temperature. The photocurrent and sensitivity of the sensing films with embedded TiO2 nanoparticles in relation to the oxygen gas concentration were measured using a green light-emitting diode (LED) as the light source and an Si photodiode as the photocurrent measuring device. Based on the results, it was confirmed that the photocurrent and sensitivity of the oxygen-sensing films were greatly improved with increases in the size and refractive index (n) of the embedded TiO2 nanoparticles. Furthermore, the improvements in the photocurrent and sensitivity of the oxygen-sensing films allowed the fabrication of a high-resolution oxygen-sensing film that can detect the oxygen distribution over large areas.

UR - http://www.scopus.com/inward/record.url?scp=85024105187&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85024105187&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2017.07.045

DO - 10.1016/j.snb.2017.07.045

M3 - Article

AN - SCOPUS:85024105187

VL - 253

SP - 934

EP - 941

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

ER -