Exploiting Two-Dimensional Bi2 O2 Se for Trace Oxygen Detection.,Angewandte Chemie International Edition

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Exploiting Two-Dimensional Bi2 O2 Se for Trace Oxygen Detection.
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2020-07-09 , DOI: 10.1002/anie.202006745
Shipu Xu ₁ , Huixia Fu ₂ , Ye Tian ₃ , Tao Deng _{4,

5,

6} , Jun Cai _{4,

6} , Jinxiong Wu ₇ , Teng Tu ₁ , Tianran Li ₁ , Congwei Tan ₈ , Yan Liang ₁ , Congcong Zhang ₁ , Zhi Liu _{4,

6} , Zhongkai Liu _{6,

9,

10,

11} , Yulin Chen _{6,

9,

10,

11} , Ying Jiang _{3,

12,

13} , Binghai Yan ₂ , Hailin Peng ₁

Affiliation

Center for Nanochemistry, Beijing Science and Engineering Center for Nanocarbons, Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
Department of Condensed Matter Physics, Weizmann Institute of Science, 7610001, Rehovot, Israel.
International Center for Quantum Materials, School of Physics, Peking University, Beijing, 100871, P. R. China.
CAS Center for Excellence in Superconducting Electronics (CENSE), State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese Academy of Sciences, Shanghai, 200050, P. R. China.
University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, P. R. China.
Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin, 300350, P. R. China.
Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, P. R. China.
ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai, 201210, P. R. China.
Collaborative Innovation Center of Quantum Matter, Beijing, 100084, P. R. China.
Department of Physics, University of Oxford, Oxford, OX1 3PU, UK.
Collaborative Innovation Center of Quantum Matter, Beijing, 100871, P. R. China.
CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, P. R. China.

We exploit a high‐performing resistive‐type trace oxygen sensor based on 2D high‐mobility semiconducting Bi₂O₂Se nanoplates. Scanning tunneling microscopy combined with first‐principle calculations confirms an amorphous Se atomic layer formed on the surface of 2D Bi₂O₂Se exposed to oxygen, which contributes to larger specific surface area and abundant active adsorption sites. Such 2D Bi₂O₂Se oxygen sensors have remarkable oxygen‐adsorption induced variations of carrier density/mobility, and exhibit an ultrahigh sensitivity featuring minimum detection limit of 0.25 ppm, long‐term stability, high durativity, and wide‐range response to concentration up to 400 ppm at room temperature. 2D Bi₂O₂Se arrayed sensors integrated in parallel form are found to possess an oxygen detection minimum of sub‐0.25 ppm ascribed to an enhanced signal‐to‐noise ratio. These advanced sensor characteristics involving ease integration show 2D Bi₂O₂Se is an ideal candidate for trace oxygen detection.

中文翻译：

利用二维Bi2 O2 Se进行痕量氧气检测。

我们利用基于二维高迁移率半导体Bi ₂ O ₂ Se纳米板的高性能电阻型痕量氧传感器。扫描隧道显微镜与第一性原理计算相结合，证实了在暴露于氧气的二维Bi ₂ O ₂ Se表面上形成了非晶硒原子层，这有助于更大的比表面积和丰富的活性吸附位。这样的2D Bi ₂ O ₂硒氧传感器具有显着的氧吸附诱导的载流子密度/迁移率变化，并具有超高灵敏度，最低检测限为0.25 ppm，长期稳定性，高持久性以及对浓度高达400 ppm的宽范围响应（室温）温度。发现以并联形式集成的二维Bi ₂ O ₂ Se阵列传感器的氧气检测最小值低于0.25 ppm，这归因于增强的信噪比。这些先进的传感器特性（包括易积分性）表明2D Bi ₂ O ₂ Se是微量氧检测的理想选择。

更新日期：2020-07-09

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