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Description
  • Byly vyšetřovány tenké vrstvy hydrogenizovaného amorfního křemíku (a-Si:H) deponované PECVD technologií s rostoucím zředěním plasmy silanu vodíkem. Bylo zjištěno, že s rostoucím přídavkem vodíku během depozice klesá počet vazeb mezi křemíkem a vodíkem. Optická šířka zakázaného pásu určená z UV-VIS transmitančních a reflektančních spekter je rostoucí funkcí zředění. Usuzuje se, že rostoucí optická šířka zakázaného pásu je způsobená klesají velikostí nanokrystalů křemíku. Byla vypočítaná velikost krystalitů 2-4 nm, která poukazuje na uspořádání na střední vzdálenost v a-Si:H. (cs)
  • We investigated thin films of amorphous hydrogenated silicon (a-Si:H) deposited by PECVD under increasing dilutions of silane plasma by hydrogen. We found out that under increasing additional hydrogen at the depositions, thin films obtain less hydrogen bonded to silicon. The optical band gap energies determined from UV Vis transmittance and reflectance spectra were found to be increasing function of the dilution. We deduce that optical band gaps expanse due to the decreasing dimensions of silicon nanocrystals. They were calculated to be of 2 – 4 nm which proves the medium-range order in a-Si:H.
  • We investigated thin films of amorphous hydrogenated silicon (a-Si:H) deposited by PECVD under increasing dilutions of silane plasma by hydrogen. We found out that under increasing additional hydrogen at the depositions, thin films obtain less hydrogen bonded to silicon. The optical band gap energies determined from UV Vis transmittance and reflectance spectra were found to be increasing function of the dilution. We deduce that optical band gaps expanse due to the decreasing dimensions of silicon nanocrystals. They were calculated to be of 2 – 4 nm which proves the medium-range order in a-Si:H. (en)
Title
  • On nanometer ordering in thin amorphous hydrogenated silicon
  • O nanometrovém uspořádání v tenkých vrstvách hydrogenizovaného amorfního křemíku (cs)
  • On nanometer ordering in thin amorphous hydrogenated silicon (en)
skos:prefLabel
  • On nanometer ordering in thin amorphous hydrogenated silicon
  • O nanometrovém uspořádání v tenkých vrstvách hydrogenizovaného amorfního křemíku (cs)
  • On nanometer ordering in thin amorphous hydrogenated silicon (en)
skos:notation
  • RIV/49777513:23640/08:00500608!RIV09-MSM-23640___
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  • P(1M06031)
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  • 1-2
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  • 384634
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  • RIV/49777513:23640/08:00500608
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  • amorphous hydrogenated silicon; optical band gap; hydrogen content; quantum size effect (en)
http://linked.open.../riv/klicoveSlovo
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  • SK - Slovenská republika
http://linked.open...ontrolniKodProRIV
  • [1967DE0451A6]
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  • Advances in Electrical and Electronic Engineering
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  • 7
http://linked.open...iv/tvurceVysledku
  • Šutta, Pavol
  • Müllerová, Jarmila
  • Vavruňková, Veronika
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  • 1336-1376
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  • 23640
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