title: Energy level splitting of CdS nanocrystals.
abstract: CdS nanocrystals have been fabricated using mercaptopropionic acid (MPA) as the stabilizing agent and Na(2)S as a sulfur source. The structure and morphology of the CdS nanocrystals have been measured by x-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). Energy level splitting was observed in the UV-VIS optical absorption spectrum of small CdS nanocrystals; the main absorption peak splits into three separate peaks, which are considered to be three discrete sub-energy levels of the 1S electronic state of the CdS nanocrystals.
authors: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, People's Republic of China. gltan@whut.edu.cn
authors: G L
authors: GL
authors: Tan
authors: Y
authors: Y
authors: Chen
authors: X F
authors: XF
authors: Yu