Published April 18, 2016 | Version v1
Journal article Metadata-only

Electron injection from graphene quantum dots to poly(amido amine) dendrimers

Creators

  • 1. Department of Physics, Center for Nanotechnology, and Center for Biomedical Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan (China)
  • 2. Master Program in Nanotechnology at CYCU, Chung Yuan Christian University, Chung-Li 32023, Taiwan (China)
  • 3. Department of Chemistry, Center for Nanotechnology, and Center for Biomedical Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan (China)

Description

The steady-state and time-resolved photoluminescence (PL) are used to study the electron injection from graphene quantum dots (GQDs) to poly(amido amine) (PAMAM) dendrimers. The PL is enhanced by depositing GQDs on the surfaces of the PAMAM dendrimers. The maximum enhancement of PL with a factor of 10.9 is achieved at a GQD concentration of 0.9 mg/ml. The dynamics of PL in the GQD/PAMAM composite are analyzed, evidencing the existence of electron injection. On the basis of Kelvin probe measurements, the electron injection from the GQDs to the PAMAM dendrimers is accounted for by the work function difference between them.

Additional details

Identifiers

DOI
10.1063/1.4947275;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
108
Journal Issue
16
Journal Page Range
vp.
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
48036148
Subject category
S77: NANOSCIENCE AND NANOTECHNOLOGY; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
AMIDES; AMINES; DENDRIMERS; ELECTRON BEAM INJECTION; GRAPHENE; PHOTOLUMINESCENCE; PROBES; QUANTUM DOTS; SURFACES; TIME RESOLUTION; WORK FUNCTIONS
Descriptors DEC
BEAM INJECTION; CARBON; ELEMENTS; EMISSION; FUNCTIONS; LUMINESCENCE; MOLECULES; NANOSTRUCTURES; NONMETALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; PHOTON EMISSION; RESOLUTION; TIMING PROPERTIES

Optional Information

Notes
(c) 2016 Author(s)