Electronic characterization of plasma-thick n-type silicon using neural networks and photoacoustic response

Djordjević, Katarina; Galović, S.; Ćojbašić, Žarko; Markushev, D. D.; Markushev, D. K.; Aleksić, Slavoljub; Pantić, D.

doi:10.1007/s11082-022-03808-3

Cited by 8 publications

(1 citation statement)

References 24 publications

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“…Photoacoustic (PA) and other photothermal (PT) techniques are non-destructive experimental methods based on recording of detectable phenomena produced by optically induced heat transfer across the illuminated sample [1][2][3][4][5][6][7][8]. These techniques have been developed for the last half century and are increasingly being applied in measuring the thermal properties of various samples [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems

Galovic,

Djordjevic,

Kovacevic

et al. 2024

Preprint

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In this paper, the time-resolved model of photoacoustic signal for samples with a complex inner structure is derived including local non-equilibrium of structural elements with multiple degrees of freedom, i.e. structural entropy of the system. The local non-equilibrium is taken into account through the fractional operator. By analyzing the model for two types of time-dependent excitation, a very short pulse and a very long pulse, it is shown that the rates of non-equilibrium relaxations in complex samples can be measured by applying the derived model and time-domain measurements. Limitations of the model and further directions of its development are discussed.

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Section: Introductionmentioning

confidence: 99%

Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems

Galovic,

Djordjevic,

Kovacevic

et al. 2024

Preprint

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Time-resolved photoacoustic response of thin solids measured using minimal volume cell

Galovic,

Stanimirovic,

Stanimirovic

et al. 2024

International Communications in Heat and Mass Transfer

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Photothermally induced temperature variations in a low-absorption sample via backside absorption

Miletic

Popović

Galović

et al. 2023

Journal of Applied Physics

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In order to make the photothermal effect detectable from a sample with low optical absorption, an optically opaque layer must be applied on its surface. A model of optically induced temperature variations for such a structure is derived, with a very thin coating applied on the non-illuminated (back) side of the sample and neglecting heat flux dissipation in the coating. Validation of the model is performed by comparing the obtained results with the results for the corresponding two-layer structure model. The influence of optical absorption on surface temperature variations of both optically transparent and semi-transparent film, whether the film is a good or poor thermal conductor, is analyzed. It is shown that the effects of optical absorption in the coated structure can be observed through variations in the measured temperature, despite the low absorbance of the sample.

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Electronic characterization of plasma-thick n-type silicon using neural networks and photoacoustic response

Cited by 8 publications

References 24 publications

Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems

Influence of Local Thermodynamic Non-Equilibrium to Photothermally Induced Acoustic Response of Complex Systems

Time-resolved photoacoustic response of thin solids measured using minimal volume cell

Photothermally induced temperature variations in a low-absorption sample via backside absorption

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