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A Photoluminescence Study in PbS-EuS Superlattices

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Kowalczyk L., Sadowski J., Gałązka R., Stachow-Wójcik A., Sipatov A., Volobuev V., Smirnov V., Dugaev V.
Acta Physica Polonica A
|
1998
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vol. 94
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issue 3
397-400
EN
Investigations of the photoluminescence of PbS-EuS superlattices deposited on (111)BaF_{2} substrates are presented. Quantum-size and deformation effects in photoluminescence spectra are observed. The strain-induced gap shift and valence-band offset is determined from experimental results. A strong stimulated photoluminescence with relatively low threshold was observed. It was found that the photocarriers generated in EuS barrier strongly affect the population of PbS subbands.
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