Photoluminescence of ZnO/C Nanocomposites Formed by the Sol-Gel Method

Journal Article · Sun Jul 15 04:00:00 EDT 2018 · Journal of Applied Spectroscopy

DOI:https://doi.org/10.1007/S10812-018-0667-8· OSTI ID:22809977

Chubenko, E. B.; Shevtsova, T. A.; Bondarenko, V. P.; Borisenko, V. E. ^[1]

---

1. Belarus State University of Informatics and Radioelectronics (Belarus)

Films of undoped zinc oxide (ZnO) and of ZnO/C nanocomposite were formed by the sol-gel method on glass substrates and on fiberglass using zinc acetate as a precursor and with the addition of zinc chloride respectively. Analysis of the photoluminescence spectra of ZnO/C films at high (N{sub 2}-laser) and low (HeCd-laser) excitation levels made it possible to establish the defining role of bound excitons in this process at 20–60 K, due to the presence of chlorine residues in the films. With the temperature raised to 300 K the role of recombination through the 1LO- and 2LO-phonon replicas of free exciton levels and impurity-defect levels begins to dominate in the photoluminescence of the ZnO/C films.

• OSTI ID: 22809977
• Journal Information: Journal of Applied Spectroscopy, Journal Name: Journal of Applied Spectroscopy Journal Issue: 3 Vol. 85; ISSN 0021-9037
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACETATES
CHLORINE
EXCITATION
EXCITONS
FIBERGLASS
FILMS
LASERS
NANOCOMPOSITES
PHONONS
PHOTOLUMINESCENCE
SOL-GEL PROCESS
SPECTRA
SUBSTRATES
ZINC CHLORIDES
ZINC OXIDES