γ-Radiation Synthesis of the Nanocrystalline Semiconductors PbS and CuS

✍ Scribed by Z.P. Qiao; Y. Xie; J.G. Xu; Y.J. Zhu; Y.T. Qian

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 72 KB
• Volume: 214
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1999.6210

✦ Synopsis

The nanocrystalline semiconductors PbS and CuS were prepared by ␥-irradiation at room temperature in an ethanol system for the first time. Carbon disulfide was used as the sulfur source; lead acetate and copper chloride were used as metal ion sources. X-ray Powder Diffraction was used to characterize the products and Transmission Electron Microscopy to determine their morphology. The purity and compositions of the products were examined by X-ray photoelectron spectra. The photoluminescence property of as-prepared PbS was studied. A blue shift was observed in the PL spectra, indicating the quantum size effect on nanocrystalline PbS.