Transition metal thiophosphates Nb4P2S21: New kind of 2D materials for multi-functional sensors

Kyung Hwan Choi; Seungbae Oh; Sudong Chae; Byung Joo Jeong; Bum Jun Kim; Jiho Jeon; Sang Hoon Lee; Sang Ok Yoon; Chaeheon Woo; Xue Dong; Asghar Ghulam; Changmo Lim; Zhixiang Liu; Cong Wang; Ali Junaid; Jae Hyun Lee; Hak Ki Yu; Jae Young Choi

doi:10.1016/j.jallcom.2021.158811

Transition metal thiophosphates Nb₄P₂S₂₁: New kind of 2D materials for multi-functional sensors

Kyung Hwan Choi, Seungbae Oh, Sudong Chae, Byung Joo Jeong, Bum Jun Kim, Jiho Jeon, Sang Hoon Lee, Sang Ok Yoon, Chaeheon Woo, Xue Dong, Asghar Ghulam, Changmo Lim, Zhixiang Liu, Cong Wang, Ali Junaid, Jae Hyun Lee, Hak Ki Yu^*, Jae Young Choi^*

^*Corresponding author for this work

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

11 Scopus citations

Abstract

A new of 2D transition metal thiophosphates, Nb₄P₂S₂₁, was synthesized through a vapor transport reaction. High purity and centimeter-scale large Nb₄P₂S₂₁ crystals were obtained by controlling the growth temperature and stoichiometric ratio between niobium, phosphorus, and sulfur (using excess sulfur condition, Nb: P: S = 4: 2: 23). It was confirmed that large Nb₄P₂S₂₁ crystals could be separated to a nanometer scale through mechanical exfoliation, and the exfoliated Nb₄P₂S₂₁ layer exhibits semiconducting characteristics by measuring the change in electrical conductivity with temperature (increased conductivity with temperature in the range of 93–333 K). Furthermore, the device characteristics for detecting visible ray laser (635 nm) and NO₂ gas molecules were verified. Based on these characteristics, the synthesized 2D material is expected to be a potential candidate for additional 2D materials and in multi-functional sensor devices, including optoelectronics and gas sensing applications.

Original language	English
Article number	158811
Journal	Journal of Alloys and Compounds
Volume	864
DOIs	https://doi.org/10.1016/j.jallcom.2021.158811
State	Published - 25 May 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

Keywords

2D material
Gas sensor
NbPS
Photodetector
Transition metal thiophosphates

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2021.158811

Cite this

Choi, K. H., Oh, S., Chae, S., Jeong, B. J., Kim, B. J., Jeon, J., Lee, S. H., Yoon, S. O., Woo, C., Dong, X., Ghulam, A., Lim, C., Liu, Z., Wang, C., Junaid, A., Lee, J. H., Yu, H. K., & Choi, J. Y. (2021). Transition metal thiophosphates Nb₄P₂S₂₁: New kind of 2D materials for multi-functional sensors. Journal of Alloys and Compounds, 864, Article 158811. https://doi.org/10.1016/j.jallcom.2021.158811

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title = "Transition metal thiophosphates Nb4P2S21: New kind of 2D materials for multi-functional sensors",

abstract = "A new of 2D transition metal thiophosphates, Nb4P2S21, was synthesized through a vapor transport reaction. High purity and centimeter-scale large Nb4P2S21 crystals were obtained by controlling the growth temperature and stoichiometric ratio between niobium, phosphorus, and sulfur (using excess sulfur condition, Nb: P: S = 4: 2: 23). It was confirmed that large Nb4P2S21 crystals could be separated to a nanometer scale through mechanical exfoliation, and the exfoliated Nb4P2S21 layer exhibits semiconducting characteristics by measuring the change in electrical conductivity with temperature (increased conductivity with temperature in the range of 93–333 K). Furthermore, the device characteristics for detecting visible ray laser (635 nm) and NO2 gas molecules were verified. Based on these characteristics, the synthesized 2D material is expected to be a potential candidate for additional 2D materials and in multi-functional sensor devices, including optoelectronics and gas sensing applications.",

keywords = "2D material, Gas sensor, NbPS, Photodetector, Transition metal thiophosphates",

author = "Choi, \{Kyung Hwan\} and Seungbae Oh and Sudong Chae and Jeong, \{Byung Joo\} and Kim, \{Bum Jun\} and Jiho Jeon and Lee, \{Sang Hoon\} and Yoon, \{Sang Ok\} and Chaeheon Woo and Xue Dong and Asghar Ghulam and Changmo Lim and Zhixiang Liu and Cong Wang and Ali Junaid and Lee, \{Jae Hyun\} and Yu, \{Hak Ki\} and Choi, \{Jae Young\}",

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year = "2021",

month = may,

day = "25",

doi = "10.1016/j.jallcom.2021.158811",

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T2 - New kind of 2D materials for multi-functional sensors

AU - Choi, Kyung Hwan

AU - Oh, Seungbae

AU - Chae, Sudong

AU - Jeong, Byung Joo

AU - Kim, Bum Jun

AU - Jeon, Jiho

AU - Lee, Sang Hoon

AU - Yoon, Sang Ok

AU - Woo, Chaeheon

AU - Dong, Xue

AU - Ghulam, Asghar

AU - Lim, Changmo

AU - Liu, Zhixiang

AU - Wang, Cong

AU - Junaid, Ali

AU - Lee, Jae Hyun

AU - Yu, Hak Ki

AU - Choi, Jae Young

PY - 2021/5/25

Y1 - 2021/5/25

N2 - A new of 2D transition metal thiophosphates, Nb4P2S21, was synthesized through a vapor transport reaction. High purity and centimeter-scale large Nb4P2S21 crystals were obtained by controlling the growth temperature and stoichiometric ratio between niobium, phosphorus, and sulfur (using excess sulfur condition, Nb: P: S = 4: 2: 23). It was confirmed that large Nb4P2S21 crystals could be separated to a nanometer scale through mechanical exfoliation, and the exfoliated Nb4P2S21 layer exhibits semiconducting characteristics by measuring the change in electrical conductivity with temperature (increased conductivity with temperature in the range of 93–333 K). Furthermore, the device characteristics for detecting visible ray laser (635 nm) and NO2 gas molecules were verified. Based on these characteristics, the synthesized 2D material is expected to be a potential candidate for additional 2D materials and in multi-functional sensor devices, including optoelectronics and gas sensing applications.

AB - A new of 2D transition metal thiophosphates, Nb4P2S21, was synthesized through a vapor transport reaction. High purity and centimeter-scale large Nb4P2S21 crystals were obtained by controlling the growth temperature and stoichiometric ratio between niobium, phosphorus, and sulfur (using excess sulfur condition, Nb: P: S = 4: 2: 23). It was confirmed that large Nb4P2S21 crystals could be separated to a nanometer scale through mechanical exfoliation, and the exfoliated Nb4P2S21 layer exhibits semiconducting characteristics by measuring the change in electrical conductivity with temperature (increased conductivity with temperature in the range of 93–333 K). Furthermore, the device characteristics for detecting visible ray laser (635 nm) and NO2 gas molecules were verified. Based on these characteristics, the synthesized 2D material is expected to be a potential candidate for additional 2D materials and in multi-functional sensor devices, including optoelectronics and gas sensing applications.

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KW - Gas sensor

KW - NbPS

KW - Photodetector

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