Features of Photoacoustic Response Formation in Systems with Interface

Authors K. Dubyk, R.M. Burbelo, M. Isaiev

Taras Shevchenko National University of Kyiv, 64/13, Volodymyrska Str., 01601 Kyiv, Ukraine

Issue Volume 10, Year 2018, Number 5
Dates Received 18 August 2018; revised manuscript received 20 October 2018; published online 29 October 2018
Citation K. Dubyk, R.M. Burbelo, M. Isaiev, J. Nano- Electron. Phys. 10 No 5, 05007 (2018)
DOI https://doi.org/10.21272/jnep.10(5).05007
PACS Number(s) 44.10. + i, 65.40.Ba, 81.70.Cv
Keywords Photoeffect, Piezoelectric detection, Silicon nanowires arrays, Interface (7) .

Features of the photoacoustic response formation in nanostructured silicon-based systems with an important specific surface were considered. In particular, influence of the "nanostructured solid / liquid" interface on processes of energy transformation "electromagnetic radiation - sound" was studied. Square-wave modulated laser radiation with a wavelength equal to 532 nm was used for excitation of an informative response. The photoacoustic signal registration in a piezoelectric configuration was performed. The photoacoustic response shapes in the cases of presence and absence of a surface liquid covering layer in contact with the nanostructured surface was experimentally detected. Modification of the response’ shape caused by existence of "nanostructured solid / liquid" interface was analyzed.

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