Fabrication of a room-temperature NO2 gas sensor using morphology controlled CVD-grown tellurium nanostructures

Ik Jun Choi; Bum Jun Kim; Sang Hoon Lee; Byung Joo Jeong; Tuqeer Nasir; Yun Seong Cho; Noeul Kim; Jae Hyun Lee; Hak Ki Yu; Jae Young Choi

doi:10.1016/j.snb.2020.128891

Fabrication of a room-temperature NO₂ gas sensor using morphology controlled CVD-grown tellurium nanostructures

Ik Jun Choi
, Bum Jun Kim
, Sang Hoon Lee
, Byung Joo Jeong
, Tuqeer Nasir
, Yun Seong Cho
, Noeul Kim
, Jae Hyun Lee
, Hak Ki Yu
, Jae Young Choi

Department of Advanced Materials Science and Engineering

Research output: Contribution to journal › Review article › peer-review

42 Scopus citations

Abstract

A room-temperature (∼26 °C) NO₂ gas sensor was fabricated using tellurium (Te) nanostructures. Te forms a helical chain with strong covalent bonds in the c-axis and weak van der Waals bonds between the chains. Therefore, the energy required for gas adsorption and desorption is low, thus, giving it the advantage of operating at room temperature. Since the shape and size of the Te helical chains can be freely controlled by adjusting the growth parameters, the electrical reactivities of Te to a specific gas can be controlled. In this study, the reactivity of Te to NO₂ gas was controlled by adjusting the number of Te nanotube walls and lengths. It was also verified that the gas detection performance was maintained even with increasing humidity.

Original language	English
Article number	128891
Journal	Sensors and Actuators, B: Chemical
Volume	333
DOIs	https://doi.org/10.1016/j.snb.2020.128891
State	Published - 15 Apr 2021

Keywords

NO gas sensor
Room temperature gas sensors
Tellurium nanostructures

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10.1016/j.snb.2020.128891

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@article{fc814970047546448a934f813117fe59,

title = "Fabrication of a room-temperature NO2 gas sensor using morphology controlled CVD-grown tellurium nanostructures",

abstract = "A room-temperature (∼26 °C) NO2 gas sensor was fabricated using tellurium (Te) nanostructures. Te forms a helical chain with strong covalent bonds in the c-axis and weak van der Waals bonds between the chains. Therefore, the energy required for gas adsorption and desorption is low, thus, giving it the advantage of operating at room temperature. Since the shape and size of the Te helical chains can be freely controlled by adjusting the growth parameters, the electrical reactivities of Te to a specific gas can be controlled. In this study, the reactivity of Te to NO2 gas was controlled by adjusting the number of Te nanotube walls and lengths. It was also verified that the gas detection performance was maintained even with increasing humidity.",

keywords = "NO gas sensor, Room temperature gas sensors, Tellurium nanostructures",

author = "Choi, \{Ik Jun\} and Kim, \{Bum Jun\} and Lee, \{Sang Hoon\} and Jeong, \{Byung Joo\} and Tuqeer Nasir and Cho, \{Yun Seong\} and Noeul Kim and Lee, \{Jae Hyun\} and Yu, \{Hak Ki\} and Choi, \{Jae Young\}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

month = apr,

day = "15",

doi = "10.1016/j.snb.2020.128891",

language = "English",

volume = "333",

journal = "Sensors and Actuators, B: Chemical",

issn = "0925-4005",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Fabrication of a room-temperature NO2 gas sensor using morphology controlled CVD-grown tellurium nanostructures

AU - Choi, Ik Jun

AU - Kim, Bum Jun

AU - Lee, Sang Hoon

AU - Jeong, Byung Joo

AU - Nasir, Tuqeer

AU - Cho, Yun Seong

AU - Kim, Noeul

AU - Lee, Jae Hyun

AU - Yu, Hak Ki

AU - Choi, Jae Young

PY - 2021/4/15

Y1 - 2021/4/15

N2 - A room-temperature (∼26 °C) NO2 gas sensor was fabricated using tellurium (Te) nanostructures. Te forms a helical chain with strong covalent bonds in the c-axis and weak van der Waals bonds between the chains. Therefore, the energy required for gas adsorption and desorption is low, thus, giving it the advantage of operating at room temperature. Since the shape and size of the Te helical chains can be freely controlled by adjusting the growth parameters, the electrical reactivities of Te to a specific gas can be controlled. In this study, the reactivity of Te to NO2 gas was controlled by adjusting the number of Te nanotube walls and lengths. It was also verified that the gas detection performance was maintained even with increasing humidity.

AB - A room-temperature (∼26 °C) NO2 gas sensor was fabricated using tellurium (Te) nanostructures. Te forms a helical chain with strong covalent bonds in the c-axis and weak van der Waals bonds between the chains. Therefore, the energy required for gas adsorption and desorption is low, thus, giving it the advantage of operating at room temperature. Since the shape and size of the Te helical chains can be freely controlled by adjusting the growth parameters, the electrical reactivities of Te to a specific gas can be controlled. In this study, the reactivity of Te to NO2 gas was controlled by adjusting the number of Te nanotube walls and lengths. It was also verified that the gas detection performance was maintained even with increasing humidity.

KW - NO gas sensor

KW - Room temperature gas sensors

KW - Tellurium nanostructures

UR - https://www.scopus.com/pages/publications/85100615568

U2 - 10.1016/j.snb.2020.128891

DO - 10.1016/j.snb.2020.128891

M3 - Review article

AN - SCOPUS:85100615568

SN - 0925-4005

VL - 333

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

M1 - 128891

ER -

Fabrication of a room-temperature NO₂ gas sensor using morphology controlled CVD-grown tellurium nanostructures

Abstract

Keywords

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