High-Efficiency Photo-Induced Charge Transfer for SERS Sensing in N-Doped 3D-Graphene on Si Heterojunction

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外文摘要：Nitrogen-doped three-dimensional graphene(N-doped 3D-graphene)is a graphene derivative with excellent adsorption capacity,large specific surface area,high porosity,and optoelectronic properties.Herein,N-doped 3D-graphene/Si heterojunctions were grown in situ directly on silicon(Si)substrates via plasma-assisted chemical vapor deposition(PACVD),which is promising for surface-enhanced Raman scattering(SERS)substrates candidates.Combined analyses of theoretical simulation,incorporating N atoms in 3D-graphene are beneficial to increase the electronic state density of the system and enhance the charge transfer between the substrate and the target molecules.The enhancement of the optical and electric fields benefits from the stronger light-matter interaction improved by the natural nano-resonator structure of N-doped 3D-graphene.The as-prepared SERS substrates based on N-doped 3D-graphene/Si heterojunctions achieve ultra-low detection for various molecules:10-8 M for methylene blue(MB)and 10-9 M for crystal violet(CRV)with rhodamine(R6G)of 10-10 M.In practical detected,10-8 M thiram was precisely detected in apple peel extract.The results indicate that N-doped 3D-graphene/Si heterojunctions based-SERS substrates have promising applications in low-concentration molecular detection and food safety.

外文关键词：

charge transferDFT simulationN-doped 3D-grapheneSERSThiram detection

作者：

Guanglin Zhang、Jie Sun、Genwang Wei、Shan Zhang、Zhengyi He、Huijuan Wu、Bingkun Wang、Siwei Yang、Guqiao Ding、Zhiduo Liu、Zhiwen Jin、Caichao Ye、Gang Wang

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作者单位：

Department of Microelectronic Science and Engineering,School of Physical Science and Technology,Ningbo University,Ningbo 315211,China

Department of Biochemistry and Molecular Biology,School of Basic Medical Sciences,Shenzhen University,Shenzhen 518071,China

Academy for Advanced Interdisciplinary Studies & Department of Materials Science and Engineering,Guangdong Provincial Key Laboratory of Computational Science and Material Design,Southern University of Science and Technology,Shenzhen 518055,China

State Key Laboratory of Functional Materials for Informatics,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China

Centre for Quantum Physics,Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE),School of Physics,Beijing Institute of Technology,Beijing 100081,China

School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education,Lanzhou University,Lanzhou 730000,China

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基金：

National Natural Science Foundation of ChinaNatural Science Foundation of NingboBeijing Institute of Technology Research Fund Program for Young ScholarsGuangdong Provincial Medical Science and Technology ResearchGuangdong Provincial Key Laboratory of Computational Science and Material DesignFundamental Research Program of ShenzhenNational Natural Science Foundation of Guangdong Province

项目编号：

62174093202003N4097A20194342019B030301001JCYJ201908091742038022022A1515110628

出版年：

2024

DOI：

10.1002/eem2.12565

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(2)