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- Title
Regulation of Ag/g-C<sub>3</sub>N<sub>4</sub> Contact Type by the Shape Control.
- Authors
Liu, Mingzhu; Chen, Jianming; Wang, Yingnan; Liu, Zhiping; Jiang, Dan; Li, Longfeng; Zhang, Maolin
- Abstract
In a metal/semiconductor nanocomposite, the contact type (Ohmic or Schottky contact) is usually decided by the relative magnitude of the working function of the metal and the semiconductor. In this paper, the Ag/g-C3N4 contact type is regulated by controlling the shape of loaded Ag nanoparticles. Under light irradiation, the intensity of internal local electric field of Ag nanoparticle, generated from its surface plasma resonance absorption, will change with the shape of Ag nanoparticles, resulting in different contact types in Ag nanospheres/g-C3N4 nanocomposite and Ag nanoplates/g-C3N4 nanocomposite. In the dark, both Ag nanoplate/g-C3N4 and Ag nanosphere/g-C3N4 nanocomposites had Ohmic contact because the work function of Ag was smaller than that of g-C3N4. However, due to the SPR adsorption of Ag in the sunlight, Ag nanosphere had stronger inner local electric field than that of Ag nanoplate, which would attract the photogenerated e− of g-C3N4 flowing to the surface of Ag nanosphere to form Schottky contact.
- Subjects
SILVER nanoparticles; PLASMA resonance; ELECTRIC fields; METALWORK; NANOPARTICLES
- Publication
NANO, 2022, Vol 17, Issue 8, p1
- ISSN
1793-2920
- Publication type
Article
- DOI
10.1142/S1793292022500588