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2012 | 121 | 1 | 281-283
Article title

Effects of Alkali Metallization on the Luminescence Degradation of Porous Silicon

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Languages of publication
EN
Abstracts
EN
In this study, change in the intensity and stability of photoluminescence obtained by porous silicon were investigated with illumination time and metallization state. The porous silicon samples were metallized by immersing into solutions containing 3 mM LiNO_3, KNO_3 and NaNO_3 metal salts using immersing plating method. The surface bond configurations of porous silicon were monitored by the Fourier transmission infrared spectroscopy and the results showed that the surfaces of the samples were oxidized after the metallization. The photoluminescence intensity increased after certain critical immersion times and photoluminescence spectrum shifted towards the high energy region after the metallization. Photoluminescence intensity of metallized porous silicon samples was more stable than as-anodized porous silicon samples. The experimental results suggested the possibility that oxygen and/or alkali metal (Li, K and Na) passivation of porous silicon surface could be a suitable way to obtain an efficient and stabilized photoluminescence.
Keywords
EN
Publisher

Year
Volume
121
Issue
1
Pages
281-283
Physical description
Dates
published
2012-01
Contributors
author
  • Kocaeli University, Gebze MYO, 41420, Çayırova, Kocaeli, Turkey
  • Natural and Applied Sci. Inst. Electro-optic and Sys. Eng. Umuttepe, Kocaeli University, 41380, Kocaeli, Turkey
author
  • Physics Dep., Istanbul Kültür University, 34136, Bakırköy, Istanbul, Turkey
author
  • Materials Sci. Eng., Gebze Institute of Technology, 41400, Çayırova, Kocaeli, Turkey
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n187kz
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