Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications
PbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/283782 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832551518655479808 |
|---|---|
| author | Pantelija M. Nikolic Konstantinos M. Paraskevopoulos Triantafyllia T. Zorba Zorka Z. Vasiljevic Eleni Pavlidou Stevan S. Vujatovic Vladimir Blagojevic Obrad S. Aleksic Aleksandar I. Bojicic Maria V. Nikolic |
| author_facet | Pantelija M. Nikolic Konstantinos M. Paraskevopoulos Triantafyllia T. Zorba Zorka Z. Vasiljevic Eleni Pavlidou Stevan S. Vujatovic Vladimir Blagojevic Obrad S. Aleksic Aleksandar I. Bojicic Maria V. Nikolic |
| author_sort | Pantelija M. Nikolic |
| collection | DOAJ |
| description | PbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated. All the samples of PbTe doped with Au or Cu were of the “n” type. The properties of these compositions were analyzed and compared with PbTe containing other dopants. The samples of PbTe doped with only 3.3 at% Au were the best among the PbTe + Au samples having the lowest plasma frequency and the highest mobility of free carriers-electrons, while PbTe doped with Cu was the opposite. Samples with the lowest Cu concentration of 0.23 at% Cu had the best properties. Thermal diffusivity and electronic transport properties of the same PbTe doped samples were also investigated using a photoacoustic (PA) method with the transmission detection configuration. The results obtained with the far infrared and photoacoustic characterization of PbTe doped samples were compared and discussed. Both methods confirmed that when PbTe was doped with 3.3 at% Au, thermoelectric and electrical properties of this doped semiconductor were both significantly improved, so Au as a dopant in PbTe could be used as a new high quality thermoelectric material. |
| format | Article |
| id | doaj-art-29aa520bf4c84b15bc91ddcd8f727b94 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-29aa520bf4c84b15bc91ddcd8f727b942025-02-03T06:01:12ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/283782283782Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric ApplicationsPantelija M. Nikolic0Konstantinos M. Paraskevopoulos1Triantafyllia T. Zorba2Zorka Z. Vasiljevic3Eleni Pavlidou4Stevan S. Vujatovic5Vladimir Blagojevic6Obrad S. Aleksic7Aleksandar I. Bojicic8Maria V. Nikolic9Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, SerbiaPhysics Department, Solid State Section, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreecePhysics Department, Solid State Section, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceInstitute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, SerbiaPhysics Department, Solid State Section, Aristotle University of Thessaloniki, 54124 Thessaloniki, GreeceInstitute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, SerbiaFaculty of Electrical Engineering, University of Belgrade, Bulevar Kralja Aleksandra 73, 11000 Belgrade, SerbiaInstitute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11000 Belgrade, SerbiaInstitute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, SerbiaInstitute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11000 Belgrade, SerbiaPbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated. All the samples of PbTe doped with Au or Cu were of the “n” type. The properties of these compositions were analyzed and compared with PbTe containing other dopants. The samples of PbTe doped with only 3.3 at% Au were the best among the PbTe + Au samples having the lowest plasma frequency and the highest mobility of free carriers-electrons, while PbTe doped with Cu was the opposite. Samples with the lowest Cu concentration of 0.23 at% Cu had the best properties. Thermal diffusivity and electronic transport properties of the same PbTe doped samples were also investigated using a photoacoustic (PA) method with the transmission detection configuration. The results obtained with the far infrared and photoacoustic characterization of PbTe doped samples were compared and discussed. Both methods confirmed that when PbTe was doped with 3.3 at% Au, thermoelectric and electrical properties of this doped semiconductor were both significantly improved, so Au as a dopant in PbTe could be used as a new high quality thermoelectric material.http://dx.doi.org/10.1155/2015/283782 |
| spellingShingle | Pantelija M. Nikolic Konstantinos M. Paraskevopoulos Triantafyllia T. Zorba Zorka Z. Vasiljevic Eleni Pavlidou Stevan S. Vujatovic Vladimir Blagojevic Obrad S. Aleksic Aleksandar I. Bojicic Maria V. Nikolic Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications Advances in Materials Science and Engineering |
| title | Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications |
| title_full | Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications |
| title_fullStr | Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications |
| title_full_unstemmed | Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications |
| title_short | Lead Telluride Doped with Au as a Very Promising Material for Thermoelectric Applications |
| title_sort | lead telluride doped with au as a very promising material for thermoelectric applications |
| url | http://dx.doi.org/10.1155/2015/283782 |
| work_keys_str_mv | AT pantelijamnikolic leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT konstantinosmparaskevopoulos leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT triantafylliatzorba leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT zorkazvasiljevic leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT elenipavlidou leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT stevansvujatovic leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT vladimirblagojevic leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT obradsaleksic leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT aleksandaribojicic leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications AT mariavnikolic leadtelluridedopedwithauasaverypromisingmaterialforthermoelectricapplications |