Decalin-assisted light emitting porous Si formation and its optical, surface and morphological properties

Karatutlu A., Istengir S., Cosgun S., Seker I., Unal B.

Applied Surface Science, cilt.422, ss.498-503, 2017 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 422
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1016/j.apsusc.2017.06.057
  • Dergi Adı: Applied Surface Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.498-503
  • Anahtar Kelimeler: Chemical etching, Confocal microscopy, Lep-Si, Photoluminescence, Surfactant
  • İstanbul Gelişim Üniversitesi Adresli: Hayır

Özet

In this research paper, light emitting porous silicon (Lep-Si) samples were fabricated by a surfactant-mediated chemical stain etching solution in order to form homogenous luminescent nanostructures at room temperature. As an industrially important solvent, decalin (decahydronaphtalene) was used as a surfactant in the HF/HNO 3 solutions in order to control the etching process. Morphological, surface and optical properties of the Lep-Si samples were examined using atomic force microscopy, X-ray photoelectron spectroscopy, photoluminescence (PL) spectroscopy, and laser scanning confocal microscopy (LSCM) techniques. These characterization techniques were correlated with the various etching times including depth dependent luminescence profiles for the first time. We report the optimum conditions for production of the most efficient Lep-Si using decalin (decahydronaphtalene) and possible structural origins of light emission using the depth dependent luminescence measurements.