On the use of the photoacoustic technique for the measurement of the thermomechanical properties of semiconductor two-layer systems

Orea, A. Cruz; Delgadillo, I.; Vargas, H.; Pichardo, J. L.; Alvarado‐Gil, J. J.; Miranda, L. C. M.

doi:10.1016/s0038-1098(96)00468-1

Cited by 11 publications

(5 citation statements)

References 8 publications

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“…The experimental setup used for the PA measurements corresponded to the open photoacoustic cell (OPC) conﬁguration . In this conﬁguration, the sample was attached on the front sound inlet of an electret microphone, and its surface was irradiated by an intensity modulated light, which was absorbed through the sample and converted into heat due to the nonradiative de‐excitation processes.…”

Section: Methodsmentioning

confidence: 99%

“…The experimental setup used for the PA measurements corresponded to the open photoacoustic cell (OPC) configuration. [12,13] In this configuration, the sample was attached on the front sound inlet of an electret microphone, and its surface was irradiated by an intensity modulated light, which was absorbed through the sample and converted into heat due to the nonradiative de-excitation processes. For this configuration, the 488 nm line of a 70 mW Ar-ion laser was used as the light source, and its intensity was modulated by a mechanical optical chopper (Stanford Research Systems, model SR-540) before it reached the sample surface.…”

Section: Photoacoustic Techniquementioning

confidence: 99%

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Influence of Germanium Content on the Properties of Cu₂Zn(SnGe)Se₄ Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique

Vigil‐Galán

González-Castillo

Macias³

et al. 2019

Physica Status Solidi (a)

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Herein, the influence of the germanium (Ge) content on the surface recombination velocity, nonradiative carrier recombination time, and thermal diffusivity of Cu2Zn(SnGe)Se4 compound from photoacoustic (PA) measurements is presented. The compounds are synthesized by a sequential thermal evaporation technique and thermal annealing. The order of the metallic stacks deposited on the coated molybdenum glass substrates is Cu/Sn/Cu/Zn/Ge. The thicknesses of Cu(3 nm)/Sn(248 nm)/Cu(112 nm)/Zn (174 nm) are kept constant, and only the thickness of the Ge layer is varied between 10 and 30 nm. The incorporation of germanium shows changes in the aforementioned parameters in dependence of the Ge content. Atomic force microscopy (AFM) as complementary measurements to the PA is carried out. The results are presented and discussed in terms of the influence of Ge content on the properties of the copper zinc tin germanium selenium (CZTGSe) compounds.

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Section: Methodsmentioning

confidence: 99%

Section: Photoacoustic Techniquementioning

confidence: 99%

Influence of Germanium Content on the Properties of Cu₂Zn(SnGe)Se₄ Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique

Vigil‐Galán

González-Castillo

Macias³

et al. 2019

Physica Status Solidi (a)

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“…The measurements of thermal characteristics were performed using the open photoacoustic cell (OPC) (Marquezini et al, 1991;Cruz et al, 1996) and inverse photopyroelectric (IPPE) techniques (Caerels et al, 1998). The experimental setup employed to obtain the sample thermal diffusivity (α) consisted of 100mW argon (Ar) laser whose light beam was mechanically modulated with a chopper and focused into the sample as shown in Fig 8. The sample (e) was fixed with vacuum grease (f) upon the inlet of an electret microphone formed by g-j sections as shown.…”

Section: Thermal Characterizationmentioning

confidence: 99%

Lead Free BNBT Type Ceramics: A Useful Material for Sensors and Ultrasound Applications

Suaste-Gómez¹,

Cuautle²

2011

Advances in Ceramics - Characterization, Raw Materials, Processing, Properties, Degradation and Healing

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“…The experimental set-up used for the PA measurements corresponds to the open photoacoustic cell (OPC) configuration [11,12]. In this configuration, the sample is attached on the front sound inlet of an electret microphone and its surface is irradiated by an intensity modulated light which is absorbed through the sample and converted into heat due to the non-radiative de-excitation processes.…”

Section: Photoacoustic Techniquementioning

confidence: 99%

Passivation properties of CdS thin films grown by chemical bath deposition on GaSb: the influence of the S/Cd ratio in the solution and of the CdS layer thickness on the surface recombination velocity

Vigil‐Galán¹,

Ximello-Quiebras²,

Aguilar‐Hernández³

et al. 2005

Semicond. Sci. Technol.

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Evidences of the passivation effect are given when thin films of CdS are deposited on GaSb crystalline substrates, using a bath chemical deposition method. The passivation process is studied through photoacoustic and photoluminescence experiments. The surface recombination velocity calculated from photoacoustic measurements decreases and the radiative recombination rate as measured from photoluminescence spectra increases when the nominal S/Cd ratio in the layer deposition solution increases. The influence of the CdS layer thickness on the surface passivation of GaSb is also studied.

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On the use of the photoacoustic technique for the measurement of the thermomechanical properties of semiconductor two-layer systems

Cited by 11 publications

References 8 publications

Influence of Germanium Content on the Properties of Cu₂Zn(SnGe)Se₄ Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique

Influence of Germanium Content on the Properties of Cu₂Zn(SnGe)Se₄ Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique

Lead Free BNBT Type Ceramics: A Useful Material for Sensors and Ultrasound Applications

Passivation properties of CdS thin films grown by chemical bath deposition on GaSb: the influence of the S/Cd ratio in the solution and of the CdS layer thickness on the surface recombination velocity

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On the use of the photoacoustic technique for the measurement of the thermomechanical properties of semiconductor two-layer systems

Cited by 11 publications

References 8 publications

Influence of Germanium Content on the Properties of Cu2Zn(SnGe)Se4 Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique

Influence of Germanium Content on the Properties of Cu2Zn(SnGe)Se4 Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique

Lead Free BNBT Type Ceramics: A Useful Material for Sensors and Ultrasound Applications

Passivation properties of CdS thin films grown by chemical bath deposition on GaSb: the influence of the S/Cd ratio in the solution and of the CdS layer thickness on the surface recombination velocity

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Influence of Germanium Content on the Properties of Cu₂Zn(SnGe)Se₄ Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique

Influence of Germanium Content on the Properties of Cu₂Zn(SnGe)Se₄ Thin Films Deposited by Sequential Thermal Evaporation Technique Studied by Photoacoustic Technique