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The role of structural properties on deep defect states in Cu2ZnSnS4 studied by photoluminescence spectroscopy
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10.1063/1.4750249
/content/aip/journal/apl/101/10/10.1063/1.4750249
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/10/10.1063/1.4750249
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Figures

Image of FIG. 1.
FIG. 1.

Raman spectrum of CZTS polycrystals. The fitting result for the A1 peak is shown on the inset graph, where the original spectrum is presented with symbols. A shoulder peak at 334.3 cm−1 is observed.

Image of FIG. 2.
FIG. 2.

Low-temperature PL spectrum of CZTS polycrystals together with the fitting result.

Image of FIG. 3.
FIG. 3.

Arrhenius plot derived from the temperature dependencies of the PL spectra of CZTS polycrystals. Thermal activation energies 289 ± 7 meV and 277 ± 6 meV were obtained for the PL bands at 1.35 eV and 1.27 eV, respectively. Solid lines present the fitting of the high temperature experimental data with the theoretical expression.22

Image of FIG. 4.
FIG. 4.

Temperature dependence of the peak positions of the PL bands presented together with the temperature dependence of the bandgap energy (solid line) of CZTS as found by Sarswat and Free23 by using the Bose-Einstein model.

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/content/aip/journal/apl/101/10/10.1063/1.4750249
2012-09-04
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The role of structural properties on deep defect states in Cu2ZnSnS4 studied by photoluminescence spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/10/10.1063/1.4750249
10.1063/1.4750249
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