vol. 16 / 

Issue 4


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I. B. Olenych, S. A. Sveleba, I. M. Kunyo, Yu. I. Olenych, and A. P. Luchechko
«Photoluminescence and Electret Properties of Porous Silicon/\([N(CH_3)_4]MeCl_4(Me=Zn, Cu)\) Hybrid Structures»
701–711 (2018)

PACS numbers: 68.37.Hk, 77.22.Ej, 77.55.fp, 78.55.Hx, 78.55.Mb, 78.67.Rb, 81.07.-b

Optically transparent crystalline arrays of \([N(CH_3)_4]MeCl_4(Me=Zn, Cu)\) are grown on the surface of porous silicon by means of the slow evaporation method. As revealed using the scanning electron microscopy, obtained crystals form arrays on the porous-layer surface and are partially embedded in the pores. Photoluminescence excitation and emission spectra of the hybrid structures are investigated in the 220400 and 400800 nm regions, respectively. As established, the multicolour photoemission is produced by combining the luminescent radiation bands of both porous silicon nanostructures and \([N(CH_3)_4]MeCl_4(Me=Zn, Cu)\) crystals. The possibility of the luminescence-properties controlling of the obtained nanosystems by changing the excitation energy is demonstrated. Electret properties of porous silicon/\([N(CH_3)_4]MeCl_4(Me=Zn, Cu)\) structures are studied by thermally stimulated depolarization method. Based on the temperature dependences of depolarization current, the activation energy of processes of the polarization charge relaxation in the experimental samples is found. Obtained results widen the perspective of using hybrid structures based on the porous silicon and \([N(CH_3)_4]MeCl_4(Me=Zn, Cu)\) crystals in electronics as components of the information processing and storage systems.

Keywords: porous silicon, hybrid structure, photoluminescence, electret, thermally stimulated depolarization

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