Hot-electron relaxation in ZnO films

• Published in: Thin solid films Vol. 519; no. 10; pp. 3421 - 3424
• Main Authors: Yang, M.D., Wu, S.W., Tong, S.C., Shu, G.W., Liu, Y.W., Shen, J.L., Lan, S.M., Wu, C.H., Huang, Y.H., Yang, T.N.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.03.2011; Elsevier
• Subjects: Acoustic emission; Acoustics; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electron temperature; Emission; Exact sciences and technology; Hot electrons; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of specific thin films; Phonon; Phonons; Photoluminescence; Physics; Thin films; Zinc oxide; ZnO films; ZnO films; Photoluminescence; Phonon; Thin films; Optical phonons; Relaxation; Electron temperature; Hot electrons; High energy; Electric field effects; Optical properties; Zinc oxide; Energy losses

The energy relaxation of hot electrons in ZnO films was investigated by the electric-field-dependent photoluminescence. From the high-energy tail of photoluminescence, the electron temperature of the hot electrons in ZnO was determined. Longitudinal optical phonon emission alone cannot explain the r...