Nanostrukturētu alumīnija nitrīdu un radniecīgu materiālu spektrālās īpašības
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Latvijas Universitāte
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Abstract
Bakalaura darbs ir veltīts aktuālai tēmai – nanomateriālu īpašību izpētei. Tas ir
izstrādāts Latvijas Universitātes Cietvielu fizikas institūta Platzonu materiālu laboratorijā
izmantojot optiskas spektroskopijas metodes. Tika pētītas AlN un Al2O3 nanomateriālu
fotoluminiscences īpašības un salīdzinātas ar attiecīgām makromateriālu īpašībām. Tika iegūti
jauni eksperimentāli rezultāti, to analīze un salīdzinājums ar literatūras datiem Ĝauj izdarīt
sekojošus secinājumus.
Vienādos eksperimentālos apstākĜos nanomateriālu fotoluminiscences intensitāte ir
mazāka, nekā makromateriālā. Nanomateriālu fotoluminiscences spektri principā ir līdzīgi
makromateriālu spektriem, tajos ir novērojamas tās pašas luminiscences joslas, bet ir arī
nozīmīgas atšėirības.
Tiek piedāvāta dažu luminiscences joslu interpretācija.
This work was elaborated in Wide Band Gap Laboratory of Solid State Physics Institute, University of Latvia, using the optical spectroscopy methods. It is devoted to an actual problem of investigation of nanomaterial properties. We have studied photoluminescence spectral properties of AlN and Al2O3 nanomaterials in comparison with macromaterials. The new experimental results have been obtained, analyzed and compared with the known literature data. On this basis the following conclusions are drawn. First: In the same experimental conditions the intensity of the luminescence of nanomaterials is lower than that of macromaterials. Second: photoluminescence spectra for nanomaterials and macromaterials in general are similar, but there are also some essential differences observed. The interpretation of some bands is proposed.
This work was elaborated in Wide Band Gap Laboratory of Solid State Physics Institute, University of Latvia, using the optical spectroscopy methods. It is devoted to an actual problem of investigation of nanomaterial properties. We have studied photoluminescence spectral properties of AlN and Al2O3 nanomaterials in comparison with macromaterials. The new experimental results have been obtained, analyzed and compared with the known literature data. On this basis the following conclusions are drawn. First: In the same experimental conditions the intensity of the luminescence of nanomaterials is lower than that of macromaterials. Second: photoluminescence spectra for nanomaterials and macromaterials in general are similar, but there are also some essential differences observed. The interpretation of some bands is proposed.