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Title: Seed-Initiated Synthesis and Tunable Doping Graphene for High-Performance Photodetectors

Journal Article · · Advanced Optical Materials
 [1];  [2]; ORCiD logo [1];  [2];  [3];  [4];  [2];  [5]; ORCiD logo [6];  [2];  [1];  [1];  [1];  [7]
  1. Ningbo Univ. (China)
  2. Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Inst. of Microsystem and Information Technology, State Key Lab. of Functional Materials for Informatics
  3. Shandong Univ., Jinan (China). Center of Nanoelectronics and School of Microelectronics
  4. Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Integrated Optoelectronics, Inst. of Semiconductors
  5. Peking Univ., Beijing (China). International Center for Quantum Materials
  6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  7. Ningbo Univ. (China); Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Inst. of Microsystem and Information Technology, State Key Lab. of Functional Materials for Informatics

Due to the promising utilizations in nanoelectronics, doping-tunable graphene is paid extensive attentions. Nevertheless, a harmless approach to dope/co-dope graphene in a controllable and easy way with low cost is still unattainable. In this work, through seeding of 0D N & S dual-doped graphene quantum dots (N & S dual-doped GQDs) on a catalytic substrate and then dynamic chemical vapor deposition (CVD), a monolayered dual-doped graphene film is demonstrated. The concentrations of dopants in graphene are strictly discerned in accordance with preliminary seeding for dual-doped GQDs. Furthermore, through the monitoring of growing process, the research elucidates the growth mechanism of the graphene, and unveils that dual-doped GQDs can serve as the nucleation centers for creating doped-graphene films by 2D epitaxial growth and thus graphene with designed dopant concentration can be obtained. Finally, the photodetector built on N & S dual-doped graphene film is found to perform satisfactorily, accompanying high detectivity (≈1.42 × 1010 cm Hz1/2 W-1) and responsivity (61 mA W-1), at wavelength of 1550 nm. The research proposes a dexterous approach for synthesizing tunably doped graphene films by the combination of locally controlled nucleation seeds and in situ CVD, which lays the foundation for applying graphene in industries of photonic and electronic devices.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC). Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); Shanghai Science and Technology Committee; Natural Science Foundation of Ningbo; USDOE
Grant/Contract Number:
89233218CNA000001; 11704204, 61604084; 11804353; 51802337; 11774368; 18511110600; 2017A610104
OSTI ID:
1650619
Alternate ID(s):
OSTI ID: 1571546
Report Number(s):
LA-UR-19-26175
Journal Information:
Advanced Optical Materials, Vol. 7, Issue 24; ISSN 2195-1071
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Figures / Tables (5)