title: [Study on the optical properties of semiconductor nanocrystalline powder using photoacoustic technology].
abstract: The optical properties of semiconductor nanocrystalline powder were studied by using photoacoustic spectroscopy technique. The band gap and the optical absorption coefficient of semiconductor nanocrystalline powder of TiO2, ZnO and Al-doped ZnO were measured by normalized photoacoustic spectroscopy technique. The results show that the optical properties of semiconductor nanocrystalline powder relate to particle size and particle shape. The band gap and the optical absorption coefficient of semiconductor nanocrystalline powder can be controlled by its fabricating techniques. By doping and changing the size and the shape of nanocrystals, changing the optical and electrical properties was achieved.
authors.affiliation: School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China. Liegh88@163.com
authors.forename: Guang-Hua
authors.initials: GH
authors.lastname: Lie
authors.forename: Zhi-Li
authors.initials: ZL
authors.lastname: Tang
authors.forename: Ting
authors.initials: T
authors.lastname: Yang
authors.forename: Xiu-Wen
authors.initials: XW
authors.lastname: Tang