Preparation and degradation of the optical properties of nano-, meso-, and macroporous silicon |
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| Affiliation: | 1. Nanomaterials Research Laboratory (NRL), Department of Applied Sciences, Chitkara University, Rajpura 140401, Punjab, India;2. Punjab Technical University (PTU), Jalandhar 144601, India;3. Department of Physics, Panjab University, Chandigarh 160014, India;4. Department of Physics, G.G.D.S.D. College, Sector-32 C, Chandigarh 160030, India;1. Department of Electronics Engineering, Chang Gung University, Taoyuan, Taiwan, ROC;2. Department of Electronics Engineering, Feng-Chia University, Taichung, Taiwan, ROC;1. IRT Jules Verne, Chemin du Chaffault, 44340 Bouguenais, France;2. Laboratoire de Thermocinétique de Nantes – UMR CNRS 6607, rue Christian Pauc, 44306 Nantes Cedex 03, France;3. Université d’Angers, 62 Avenue Notre Dame du Lac, 49000 Angers, France |
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| Abstract: | In the work some peculiarities in formation of the porous silicon, its morphology and composition were investigated, as well as some optical properties of this material. Porous silicon was obtained on the substrates of single-crystalline Si as well as on the silicon structures with p–n junctions. In order to obtain nano-, meso- and macroporous silicon as well as multi-layered porous structures several technological parameters (were controlled) varied—orientation of the substrates, conductivity type and composition of the etchant. Correlation between photoluminescence intensity of the obtained samples and intensity of the absorption band in their IR spectra (the band at 616 cm−1) that is due to the presence of Si–Si bonds in porous layer was observed. The influence of the porous silicon storage in the air on the degradation of its photoluminescence parameters was also estimated. |
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| Keywords: | Nano-, meso- and macroporous silicon Multi-layered porous structures Optical parameters of porous materials |
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