Citation
Al-Jumaili, Batool Eneaze Bandar and Talib, Zainal Abidin and Liew, Josephine Ying Chyi and Paiman, Suriati and Ahmed, Naser Mahmoud and Al-Jumaily, Abdulmajeed Hammadi Jasim and Ramizy, Asmiet and Abdulateef, Sinan A. and Muh'd, Ibrahim Bagudo and Mofdal, Manahil Elnoor Edam
(2015)
The correlation of blue shift of photoluminescence and morphology of silicon nanoporous.
In: International Conference on Nano-Electronic Technology Devices and Materials (IC-NET 2015), 27 Feb.-2 Mar. 2015, Shah Alam, Selangor. (pp. 1-5).
Abstract
Porous silicon with diameters ranging from 6.41 to 7.12 nm were synthesized via electrochemical etching by varied anodization current density in ethanoic solutions containing aqueous hydrofluoric acid up to 65mA/cm2.The luminescence properties of the nanoporous at room temperature were analyzed via photoluminescence spectroscopy. Photoluminescence PL spectra exhibit a broad emission band in the range of 360-700 nm photon energy. The PL spectrum has a blue shift in varied anodization current density; the blue shift incremented as the existing of anodization although the intensity decreased. The current blue shift is owning to alteration of silicon nanocrystal structure at the superficies. The superficial morphology of the PS layers consists of unified and orderly distribution of nanocrystalline Si structures, have high porosity around (93.75%) and high thickness 39.52 µm.
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