Photothermal Investigation of Surface Defects of Pure Semiconducting A2B6 Materials

Zakrzewski, J.; Maliński, M.; Strzałkowski, K.; Madaj, D.; Firszt, F.; Łęgowski, S.; Μęczyńska, H.

doi:10.1007/s10765-012-1199-8

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…More details concerning theoretical aspects of a used model can be found in a previous paper [15]. Theoretical predictions for the amplitude and phase spectra in the rear measurement configuration are presented in Fig.…”

Section: Figmentioning

confidence: 99%

Determination of the Exciton Binding Energy Using Photothermal and Photoluminescence Spectroscopy

2012

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In this paper, experimental photoluminescence (PL) and piezoelectric photothermal (PPT) spectra of selected II-VI binary crystals are presented and analyzed. The quantitative analysis of the photothermal spectra was performed using a modified and extended Jackson-Amer model. The values of the bandgap energies of investigated semiconductors were computed from the PT amplitude and phase spectra. From the temperature dependence of the exciton emission so-called "excitonic energy gaps" have been determined. It follows from the theory that the exciton binding energy is the difference of these two values of energy gaps derived from PPT and PL spectroscopy.

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Section: Figmentioning

confidence: 99%

Determination of the Exciton Binding Energy Using Photothermal and Photoluminescence Spectroscopy

2012

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“…An analogous expression to Eq. 12 can also be obtained for Blonskij's model taking the above given assumptions [16]. Putting the corrected expression for the temperature distribution (Eq.…”

Section: Corrections Of the Models In The Case Of The Presence Of Defmentioning

confidence: 99%

Temperature Distributions in Piezoelectric Photothermal Spectroscopy

Zakrzewski¹,

Maliński

Strzałkowski³

2012

Int J Thermophys

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Piezoelectric photothermal spectroscopy is a method in which the stress and strain of a sample due to the absorption of electromagnetic radiation is detected by a piezoelectric transducer. The temperature distribution in the sample is the basis to obtain the theoretical amplitude and phase of photothermal piezoelectric spectra. In contrast to microphone detection, which needs only the temperature at one of the sample surfaces, in the piezoelectric one, it is necessary to know the spatial temperature distribution. The distributions given by Blonskij and by the modified interferential model of Malinski are applied. The influence of defect states in a volume and at the surfaces on the character of the amplitude and phase piezoelectric spectra is analyzed. The comparison of these approximate models and the two-layer one of Fernelius is presented.

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Photoacoustic Signal Formation in Heterogeneous Multilayer Systems with Piezoelectric Detection

et al. 2014

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Photothermal Investigation of Surface Defects of Pure Semiconducting A2B6 Materials

Cited by 6 publications

References 16 publications

Determination of the Exciton Binding Energy Using Photothermal and Photoluminescence Spectroscopy

Determination of the Exciton Binding Energy Using Photothermal and Photoluminescence Spectroscopy

Temperature Distributions in Piezoelectric Photothermal Spectroscopy

Photoacoustic Signal Formation in Heterogeneous Multilayer Systems with Piezoelectric Detection

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