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Photoacoustic investigations of the optical absorption spectra of porous silicon layers on a silicon backing |
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| Authors: | Miros?aw Maliński ?ukasz Chrobak Leszek Bychto |
| Affiliation: | 1. Institute of Photonics, National Changhua University of Education, Changhua 500, Taiwan;2. Frontier Photonics Research Center, National Changhua University of Education, Changhua 500, Taiwan;3. Department of Materials and Energy Engineering, Ming Dao University, Pitou, Changhua 52345, Taiwan;4. Fujian University of Technology, Straits College of Engineering, Fuzhou 350118, Fujian, China;5. Department of Automatic Control Engineering, Feng Chia University, Taichung 407, Taiwan |
| Abstract: | This paper presents a series of experimental photoacoustic spectra of porous silicon layers on crystalline silicon and their numerical analysis performed in the proposed two-layer model. The goal of the analysis was to calculate the optical absorption spectra of porous silicon from the photoacoustic spectra of porous silicon layers on a silicon background. The experimental character of the observed absorption band associated with the porous silicon was revealed. This is the first attempt at a theoretical interpretation of the photoacoustic spectra of porous silicon on a silicon backing. |
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