Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : PL

Morphological and Optical Properties of Porous Silicon

Mohammed S. Mohammed; Ruqaya A. Shlaga

Engineering and Technology Journal, 2019, Volume 37, Issue 1B, Pages 17-20
DOI: 10.30684/etj.37.1B.3

In this work photo-electrochemical etching was used to synthesize uniform and non-uniform macro porous silicon from n-type with orientation (100). Specimens were anodized in a sol of 25% HF: C2H2OH at 1:1 rate. Morphology and porosity of the samples were studied. Optical characteristics (reflection and photoluminescence) of PS samples by changing current density (10, 12, 14 and 16 mA/cm2 ) for fixed etching time (8min) and power density (17mW/cm2 ) by using red laser illumination wavelength (645nm) were investigated. Porous silicon samples imaged via scanning electron microscope (SEM), which showed the topography of silicon surface and pores distribution.