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Proceedings Paper

Biexcitonic behavior of 1s yellow exciton in Cu2O microcrystallites embedded in solution-derived nano-zirconia film matrix
Author(s): S. Jana; Kumar Prasanta Biswas
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Paper Abstract

Cu2O microcrystallites of the size range 55-73 angstrom were embedded in the nano-zirconia thin film matrix if precursor contains zirconium oxychloride octahydrate and cupric nitrate trihydrate. Absorption and fluorescence spectra of the films annealed at different temperature, 200 degrees-1200 degrees C revealed that the microcrystallites are possessing both mono- and biexcitonic behaviors which are dependent on microcrystallite size. Maximum biexcitonic behavior has been predicted in the case of 450 degrees annealed sample which also showed phosphorescence possibly due to inter-crossing of potential energy curve (Gamma) 1+ of Cu2O exciton and 3D of free Cu+. The anisotropic nature of the excitonic transitions of Cu2O was also observed due to electrical quadrupole transition which was authenticated by its emission and ESR spectral studies.

Paper Details

Date Published: 25 September 2001
PDF: 10 pages
Proc. SPIE 4417, Photonics 2000: International Conference on Fiber Optics and Photonics, (25 September 2001); doi: 10.1117/12.441334
Show Author Affiliations
S. Jana, Central Glass and Ceramic Research Institute (India)
Kumar Prasanta Biswas, Central Glass and Ceramic Research Institute (India)

Published in SPIE Proceedings Vol. 4417:
Photonics 2000: International Conference on Fiber Optics and Photonics
S. K. Lahiri; Ranjan Gangopadhyay; Asit K. Datta; Samit K. Ray; B. K. Mathur; S. Das, Editor(s)

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