4.8 Article

High-Performance Phototransistor of Epitaxial PbS Nanoplate-Graphene Heterostructure with Edge Contact

Journal

ADVANCED MATERIALS
Volume 28, Issue 30, Pages 6497-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201601071

Keywords

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Funding

  1. National Natural Science Foundation of China [21373065, 61474033]
  2. Ministry of Science and Technology of China [2012CB934103]
  3. CAS Key Laboratory of Nanosystem and Hierarchical Fabrication
  4. Youth Innovation Promotion Association CAS

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Fast infrared response (rising time = 24 ms) and ultrahigh photoconductive gain (10(8)) are obtained in epitaxial PbS-nanoplate-graphene heterostructures. Combining density functional theory with experiments, this study finds single-crystalline PbS nanoplates are covalently bound to the grapheme edge with strong chemical hybridization, which offers a fast carrier transmission path.

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