Electric field assisted growth of self-organized CdS films: size dependent structural and optical properties.
This paper presents a systematic study of electric field assisted growth of self-organized cadmium sulphide (CdS) quantum dots (Q-CdS). CdS thin films of self-organized quantum dot like structure with different particle size have been successfully deposited simply by varying the concentration of surfactant in the reaction matrix. The model to describe the self-organization is also discussed. The size of CdS nanoparticles can be altered from 68 nm (corresponding to bulk) to 2 nm. The structural, optical, and morphological properties of Q-CdS films have been investigated. A blue shift has been observed in optical absorption and photoluminescence spectra. The strained growth of Q-CdS films has been observed. The microstructural strain calculated from peak broadening reveals an increase in strain with decreasing particle size. This study may provide a convenient method to deposit size selective and organized nanocrystalline semiconductor thin films.
Chaure
Shweta
S
Physics Department, Trinity College, University of Dublin, Dublin 2, Ireland.
Chaure
N B
NB
Pandey
R K
RK
D019187:Cadmium Compounds / Q000737:chemistry*; D004563:Electrochemistry; D049449:Luminescence; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D018625:Microscopy, Atomic Force; D036103:Nanotechnology; D055095:Optics and Photonics; D010316:Particle Size; D045663:Quantum Dots; D013440:Sulfides / Q000737:chemistry*
D019187:Cadmium Compounds; D013440:Sulfides; C034939:cadmium sulfide