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- Title
Photoluminescence of Low-Dimensional Polymethylmethacrylate/(Zn,Cd,Mn,Eu)S Composite Structures.
- Authors
Smagin, V. P.; Isaeva, A. A.
- Abstract
We implemented a colloidal technology for the synthesis and alloying of low-dimensional structures based on zinc and cadmium sulfides directly in an acrylic monomer medium during obtaining optically transparent polymethylmethacrylate/(Zn,Cd,Mn,Eu)S composites. The photoluminescence of the composites is associated with the system of levels of structural defects of the semiconductor particles located in its forbidden zone, which are formed upon successive doping of ZnS and CdS layers with Mn2+ and Eu3+ ions, and with intraband 5D0 → 7F1,2,4 transitions of 4f electrons of Eu3+ ions. Photoluminescence excitation is achieved by the transition of electrons from the valence band of the semiconductor to the levels of structural defects and partial energy transfer to the excited energy levels of Eu3+ ions.
- Subjects
COMPOSITE structures; PHOTOLUMINESCENCE; ELECTRON transitions; SEMICONDUCTOR defects; CADMIUM sulfide; TERBIUM
- Publication
Technical Physics, 2021, Vol 66, Issue 6, p798
- ISSN
1063-7842
- Publication type
Article
- DOI
10.1134/S1063784221050224