Synthesis and Characterization of Luminescent Amorphous Porous Silicon (ap-Si) Nanoparticles via unconventional Stain Etching

3rd Euro-Mediterranean Conference on Materials and Renewable Energies

材料科学;能源学

Tchalala, M.R.^1 ; El-Demellawi, J.K.^1 ; Mughal, A.J.^1 ; Chaieb, S.^1

Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal

23955, Saudi Arabia^1

关键词: Characterization techniques;    Crystalline silicons;    Crystalline-to-amorphous;    Morphological study;    Red photoluminescence;    Silicon nano structures;    Silicon nanoparticles;    Synthesis and characterizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/758/1/012018/pdf
DOI  :  10.1088/1742-6596/758/1/012018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Starting from crystalline silicon we synthesised bright suspensions of amorphous porous silicon nanoparticles through unconventional stain etching. Upon excitation with UV light, this novel nanostructured material gives rise to an intense red photoluminescence (PL) which resembles that of some silicon nanostructures. We studied the properties of the prepared nanoparticles using a number of cutting-edge characterization techniques such as TEM, SEM and EDX. The complete crystalline-to-amorphous phase transition, confirmed by the morphological studies, seems fortuitous.