In this work, n-type and p-type PbTe doped with Br and Na, respectively, were thoroughly examined to determine the effect of the dopant on microstructure. Macro and micro homogeneity of the samples were studied by means of micro-Fourier-transform infrared (micro-FTIR) spectroscopy, micro-Seebeck measurements, and scanning electron microscopy with energy-dispersive x-ray analysis (SEM/EDX). SEM/EDX observations showed the samples were not single-phase materials—second phases were created by inclusions that disturbed the coherence of the matrix and, subsequently, drastically affected the Seebeck coefficient. In a micro-scale study, local variations of sodium content were detected in Na-doped samples; in Br-doped samples a second, PbBr2, phase was observed in the PbTe matrix. A direct effect of matrix dopant on Seebeck coefficient and plasmon frequency for the Br-doped and Na-doped samples was observed by use of the three complementary techniques.
Keywords:
PbTe doped with Br and Na / microstructure / FTIR / micro-Seebeck measurements / SEM
Source:
Journal of Electronic Materials, 2014, 43, 10, 3785-3791
TY - JOUR
AU - Stefanaki, E. C.
AU - Polymeris, G. S.
AU - Nikolić, Pantelija M.
AU - Papageorgiou, Ch.
AU - Pavlidou, Eleni
AU - Hatzikraniotis, E.
AU - Kyratsi,, Th.
AU - Paraskevopoulos, Konstantinos M.
PY - 2014
UR - https://dais.sanu.ac.rs/123456789/573
AB - In this work, n-type and p-type PbTe doped with Br and Na, respectively, were thoroughly examined to determine the effect of the dopant on microstructure. Macro and micro homogeneity of the samples were studied by means of micro-Fourier-transform infrared (micro-FTIR) spectroscopy, micro-Seebeck measurements, and scanning electron microscopy with energy-dispersive x-ray analysis (SEM/EDX). SEM/EDX observations showed the samples were not single-phase materials—second phases were created by inclusions that disturbed the coherence of the matrix and, subsequently, drastically affected the Seebeck coefficient. In a micro-scale study, local variations of sodium content were detected in Na-doped samples; in Br-doped samples a second, PbBr2, phase was observed in the PbTe matrix. A direct effect of matrix dopant on Seebeck coefficient and plasmon frequency for the Br-doped and Na-doped samples was observed by use of the three complementary techniques.
PB - Springer
T2 - Journal of Electronic Materials
T1 - Macro and Micro-Scale Features of Thermoelectric PbTe (Br, Na) Systems: Micro-FTIR Spectroscopy, Micro-Seebeck Measurements, and SEM/EDX Observations
SP - 3785
EP - 3791
VL - 43
IS - 10
DO - 10.1007/s11664-014-3163-9
UR - https://hdl.handle.net/21.15107/rcub_dais_573
ER -
@article{
author = "Stefanaki, E. C. and Polymeris, G. S. and Nikolić, Pantelija M. and Papageorgiou, Ch. and Pavlidou, Eleni and Hatzikraniotis, E. and Kyratsi,, Th. and Paraskevopoulos, Konstantinos M.",
year = "2014",
abstract = "In this work, n-type and p-type PbTe doped with Br and Na, respectively, were thoroughly examined to determine the effect of the dopant on microstructure. Macro and micro homogeneity of the samples were studied by means of micro-Fourier-transform infrared (micro-FTIR) spectroscopy, micro-Seebeck measurements, and scanning electron microscopy with energy-dispersive x-ray analysis (SEM/EDX). SEM/EDX observations showed the samples were not single-phase materials—second phases were created by inclusions that disturbed the coherence of the matrix and, subsequently, drastically affected the Seebeck coefficient. In a micro-scale study, local variations of sodium content were detected in Na-doped samples; in Br-doped samples a second, PbBr2, phase was observed in the PbTe matrix. A direct effect of matrix dopant on Seebeck coefficient and plasmon frequency for the Br-doped and Na-doped samples was observed by use of the three complementary techniques.",
publisher = "Springer",
journal = "Journal of Electronic Materials",
title = "Macro and Micro-Scale Features of Thermoelectric PbTe (Br, Na) Systems: Micro-FTIR Spectroscopy, Micro-Seebeck Measurements, and SEM/EDX Observations",
pages = "3785-3791",
volume = "43",
number = "10",
doi = "10.1007/s11664-014-3163-9",
url = "https://hdl.handle.net/21.15107/rcub_dais_573"
}
Stefanaki, E. C., Polymeris, G. S., Nikolić, P. M., Papageorgiou, Ch., Pavlidou, E., Hatzikraniotis, E., Kyratsi, ,. Th.,& Paraskevopoulos, K. M.. (2014). Macro and Micro-Scale Features of Thermoelectric PbTe (Br, Na) Systems: Micro-FTIR Spectroscopy, Micro-Seebeck Measurements, and SEM/EDX Observations. in Journal of Electronic Materials
Springer., 43(10), 3785-3791.
https://doi.org/10.1007/s11664-014-3163-9
https://hdl.handle.net/21.15107/rcub_dais_573
Stefanaki EC, Polymeris GS, Nikolić PM, Papageorgiou C, Pavlidou E, Hatzikraniotis E, Kyratsi ,T, Paraskevopoulos KM. Macro and Micro-Scale Features of Thermoelectric PbTe (Br, Na) Systems: Micro-FTIR Spectroscopy, Micro-Seebeck Measurements, and SEM/EDX Observations. in Journal of Electronic Materials. 2014;43(10):3785-3791.
doi:10.1007/s11664-014-3163-9
https://hdl.handle.net/21.15107/rcub_dais_573 .
Stefanaki, E. C., Polymeris, G. S., Nikolić, Pantelija M., Papageorgiou, Ch., Pavlidou, Eleni, Hatzikraniotis, E., Kyratsi,, Th., Paraskevopoulos, Konstantinos M., "Macro and Micro-Scale Features of Thermoelectric PbTe (Br, Na) Systems: Micro-FTIR Spectroscopy, Micro-Seebeck Measurements, and SEM/EDX Observations" in Journal of Electronic Materials, 43, no. 10 (2014):3785-3791,
https://doi.org/10.1007/s11664-014-3163-9 .,
https://hdl.handle.net/21.15107/rcub_dais_573 .
