Two-photon-excited green emission and its dichroic shift of oriented thin-film CdS on glass formed by laser deposition | Zendy

B. Ullrich | Zendy; R. Schroeder | Zendy; H. Sakai | Zendy; A. Zhang | Zendy; S. Z. D. Cheng | Zendy

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Two-photon-excited green emission and its dichroic shift of oriented thin-film CdS on glass formed by laser deposition

Author(s) -

B. Ullrich,

R. Schroeder,

H. Sakai,

A. Zhang,

S. Z. D. Cheng

Publication year - 2002

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1432756

Subject(s) - photoluminescence , thin film , materials science , laser , excited state , dichroic glass , pulsed laser deposition , optoelectronics , photon energy , polarization (electrochemistry) , optics , photon , atomic physics , chemistry , nanotechnology , physics

The photoluminescence of oriented thin-film CdS on glass formed by laser deposition was investigated employing 200 fs, 1.54 eV laser pulses at room temperature. The ultrafast excitation caused a two-photon absorption process, which results in purely green emission at the band gap. The spectra are fitted very well by the application of the van Roosbroeck–Shockley relation, density of states, and Urbach’s rule demonstrating the intrinsic character of the radiative recombination. It is further shown that the energy position of the emission peak depends on the polarization of the impinging laser beam due to the dichroism of the highly oriented films.

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