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CuBr films on KBr exhibiting or times higher efficiency of free-exciton luminescence than those on usual substrates such as
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10.1063/1.2740483
/content/aip/journal/apl/90/20/10.1063/1.2740483
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/20/10.1063/1.2740483

Figures

Image of FIG. 1.
FIG. 1.

Luminescence spectra, measured at 77 and , of thick (a) and thin [(b), (c), and (d)] CuBr films grown on [(a) and (b)], KCl (c), and KBr (d) substrates. All the luminescences were excited at the same photon energy, .

Image of FIG. 2.
FIG. 2.

Luminescence spectra at before (curve 1) and after (curve 2) the correction for absorption was made, in the exciton transition energy region of the CuBr films, whose spectra in the extended region are shown in Fig. 1. For comparison, the absorption spectra are also shown with the maximum heights being taken to be equal to those of curve 2.

Image of FIG. 3.
FIG. 3.

Luminescence and absorption spectra at of a thick CuCl film grown on a substrate. The same caption as that of Fig. 2 applies to this figure.

Tables

Generic image for table
Table I.

Integrated PL efficiencies at corrected for absorption, in unit of the integrated PL efficiency at of the band of the thick film. For convenience, the PL efficiencies of the DA bands are taken as the total efficiencies minus the PL efficiencies of the bands.

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/content/aip/journal/apl/90/20/10.1063/1.2740483
2007-05-18
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: CuBr films on KBr exhibiting 102 or 103 times higher efficiency of free-exciton luminescence than those on usual substrates such as Al2O3
http://aip.metastore.ingenta.com/content/aip/journal/apl/90/20/10.1063/1.2740483
10.1063/1.2740483
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