title: Electrochemical synthesis of CdTe/SWNT hybrid nanostructures and their tunable electrical and optoelectrical properties.
abstract: A facile electrodeposition technique was utilized to deposit single-walled carbon nanotubes (SWNTs) with cadmium telluride (CdTe) with well-controlled size, density, surface morphology, and composition. By controlling the applied charge, the morphology of these hybrid nanostructures was altered from CdTe nanoparticles on SWNTs to SWNT/CdTe core/shell nanostructures and the composition of the CdTe nanoparticles was altered from Te-rich (29 at% Cd) to Cd-rich (79 at% Cd) CdTe by adjusting the deposition potential. The electrical and optoelectrical properties of these hybrid nanostructures showed that photo-induced current can be tuned by tailoring the conductivity type (n-type or p-type), morphology, and size of the CdTe nanostructures, with a maximum photosensitivity (ΔI/I(0)) of about 30% for SWNT/Cd-rich CdTe (n-type) core/shell nanostructures. This work demonstrates a novel approach for synthesizing metal chalcogenide/SWNT hybrid nanostructures for various electrical and optoelectrical applications.
authors: Department of Chemical and Environmental Engineering, University of California-Riverside, Riverside, CA 92521, USA.
authors: Chong Hyun
authors: CH
authors: Chang
authors: Hyunsung
authors: H
authors: Jung
authors: Youngwoo
authors: Y
authors: Rheem
authors: Kyu-Hwan
authors: KH
authors: Lee
authors: Dong-Chan
authors: DC
authors: Lim
authors: Yongsoo
authors: Y
authors: Jeong
authors: Jae-Hong
authors: JH
authors: Lim
authors: Nosang V
authors: NV
authors: Myung
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry* / Q000528:radiation effects; D004553:Electric Conductivity; D004574:Electromagnetic Fields; D004595:Electroplating; D008027:Light; D008422:Materials Testing; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D011829:Radiation Dosage; D012031:Refractometry / Q000379:methods; D013691:Tellurium / Q000737:chemistry* / Q000528:radiation effects
chemical_list: D019187:Cadmium Compounds; D037742:Nanotubes, Carbon; D013691:Tellurium; C028337:cadmium telluride