Platinum-functionalized black phosphorus hydrogen sensors

Geonyeop Lee, Sunwoo Jung, Soohwan Jang, Ji Hyun Kim

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Black phosphorus (BP), especially in its two-dimensional (2D) form, is an intriguing material because it exhibits higher chemical sensing ability as compared to other thin-film and 2D materials. However, its implementation into hydrogen sensors has been limited due to its insensitivity toward hydrogen. We functionalized exfoliated BP flakes with Pt nanoparticles to improve their hydrogen sensing efficiency. Pt-functionalized BP sensors with back-gated field-effect transistor configuration exhibited a fast response/decay, excellent reproducibility, and high sensitivities (over 50%) at room temperature. Langmuir isotherm model was employed to analyze the Pt-catalyzed BP sensors. Furthermore, the activation energy of hydrogen adsorption on Pt-decorated BP was evaluated, which is equal to the change in work function resulting from hydrogen adsorption on the Pt(111) surface. These results demonstrate that Pt-catalyzed BP exhibits a great potential for next-generation hydrogen sensors.

Original languageEnglish
Article number242103
JournalApplied Physics Letters
Volume110
Issue number24
DOIs
Publication statusPublished - 2017 Jun 12

Fingerprint

platinum black
phosphorus
sensors
hydrogen
adsorption
sensitivity
flakes
isotherms
field effect transistors
activation energy
nanoparticles
decay
room temperature
thin films
configurations

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Platinum-functionalized black phosphorus hydrogen sensors. / Lee, Geonyeop; Jung, Sunwoo; Jang, Soohwan; Kim, Ji Hyun.

In: Applied Physics Letters, Vol. 110, No. 24, 242103, 12.06.2017.

Research output: Contribution to journalArticle

Lee, Geonyeop ; Jung, Sunwoo ; Jang, Soohwan ; Kim, Ji Hyun. / Platinum-functionalized black phosphorus hydrogen sensors. In: Applied Physics Letters. 2017 ; Vol. 110, No. 24.
@article{3dd6edf25af84549aee23581635b8162,
title = "Platinum-functionalized black phosphorus hydrogen sensors",
abstract = "Black phosphorus (BP), especially in its two-dimensional (2D) form, is an intriguing material because it exhibits higher chemical sensing ability as compared to other thin-film and 2D materials. However, its implementation into hydrogen sensors has been limited due to its insensitivity toward hydrogen. We functionalized exfoliated BP flakes with Pt nanoparticles to improve their hydrogen sensing efficiency. Pt-functionalized BP sensors with back-gated field-effect transistor configuration exhibited a fast response/decay, excellent reproducibility, and high sensitivities (over 50{\%}) at room temperature. Langmuir isotherm model was employed to analyze the Pt-catalyzed BP sensors. Furthermore, the activation energy of hydrogen adsorption on Pt-decorated BP was evaluated, which is equal to the change in work function resulting from hydrogen adsorption on the Pt(111) surface. These results demonstrate that Pt-catalyzed BP exhibits a great potential for next-generation hydrogen sensors.",
author = "Geonyeop Lee and Sunwoo Jung and Soohwan Jang and Kim, {Ji Hyun}",
year = "2017",
month = "6",
day = "12",
doi = "10.1063/1.4985708",
language = "English",
volume = "110",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "24",

}

TY - JOUR

T1 - Platinum-functionalized black phosphorus hydrogen sensors

AU - Lee, Geonyeop

AU - Jung, Sunwoo

AU - Jang, Soohwan

AU - Kim, Ji Hyun

PY - 2017/6/12

Y1 - 2017/6/12

N2 - Black phosphorus (BP), especially in its two-dimensional (2D) form, is an intriguing material because it exhibits higher chemical sensing ability as compared to other thin-film and 2D materials. However, its implementation into hydrogen sensors has been limited due to its insensitivity toward hydrogen. We functionalized exfoliated BP flakes with Pt nanoparticles to improve their hydrogen sensing efficiency. Pt-functionalized BP sensors with back-gated field-effect transistor configuration exhibited a fast response/decay, excellent reproducibility, and high sensitivities (over 50%) at room temperature. Langmuir isotherm model was employed to analyze the Pt-catalyzed BP sensors. Furthermore, the activation energy of hydrogen adsorption on Pt-decorated BP was evaluated, which is equal to the change in work function resulting from hydrogen adsorption on the Pt(111) surface. These results demonstrate that Pt-catalyzed BP exhibits a great potential for next-generation hydrogen sensors.

AB - Black phosphorus (BP), especially in its two-dimensional (2D) form, is an intriguing material because it exhibits higher chemical sensing ability as compared to other thin-film and 2D materials. However, its implementation into hydrogen sensors has been limited due to its insensitivity toward hydrogen. We functionalized exfoliated BP flakes with Pt nanoparticles to improve their hydrogen sensing efficiency. Pt-functionalized BP sensors with back-gated field-effect transistor configuration exhibited a fast response/decay, excellent reproducibility, and high sensitivities (over 50%) at room temperature. Langmuir isotherm model was employed to analyze the Pt-catalyzed BP sensors. Furthermore, the activation energy of hydrogen adsorption on Pt-decorated BP was evaluated, which is equal to the change in work function resulting from hydrogen adsorption on the Pt(111) surface. These results demonstrate that Pt-catalyzed BP exhibits a great potential for next-generation hydrogen sensors.

UR - http://www.scopus.com/inward/record.url?scp=85020523306&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020523306&partnerID=8YFLogxK

U2 - 10.1063/1.4985708

DO - 10.1063/1.4985708

M3 - Article

AN - SCOPUS:85020523306

VL - 110

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 24

M1 - 242103

ER -