Browsing by Subject "PbTe"

Now showing items 1-6 of 6

    • Conference Object  

      Carrier mapping in thermoelectric materials 

      Polymeris, G. S.; Hatzikraniotis, E.; Stefanaki, E. C.; Pavlidou, E.; Kyratsi, Theodora; Paraskevopoulos, K. M.; Kanatzidis, M. G. (Affiliation: Physics Department, Aristotle University of Thessaloniki, GR- 54124, Thessaloniki, GreeceAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, CyprusAffiliation: Department of Chemistry, Northwestern University, 2145 North Sheridan Road, Evanston, IL 60208, United StatesCorrespondence Address: Physics Department, Aristotle University of Thessaloniki, GR- 54124, Thessaloniki, Greece, 2013)
      The application of micro-fourier transform infrared (FT1R) mapping analysis to thermoelectric materials towards identification of doping inhomogeneities is described. Micro-FTIR, in conjunction with fitting, is used as ...
    • Conference Object  

      IR reflectivity studies of mechanically alloyed PbTe nanocrystals 

      Hasapis, T. Ch; Papageorgiou, C.; Hatzikraniotis, E.; Kyratsi, Theodora; Paraskevopoulos, K. M. (Affiliation: Department of Physics, Aristotle University of Thessaloniki, 54123 Thessaloniki, GreeceAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, CyprusCorrespondence Address: Hasapis, T. Ch.Department of Physics, Aristotle University of Thessaloniki, 54123 Thessaloniki, Greece, 2009)
      Nano-crystalline lead telluride powder was synthesized by mechanical alloying using a high-energy planetary ball mill. The broadening of the X-ray diffraction peaks vs ball milling time, indicates small crystalline size ...
    • Article  

      Macro and Micro-Scale Features of Thermoelectric PbTe (Br, Na) Systems: Micro-FTIR Spectroscopy, Micro-Seebeck Measurements, and SEM/EDX Observations 

      Stefanaki, E. C.; Polymeris, G. S.; Nikolic, P. M.; Papageorgiou, C.; Pavlidou, E.; Hatzikraniotis, E.; Kyratsi, Theodora; Paraskevopoulos, K. M. (2014)
      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 ...
    • Doctoral Thesis  Open Access

      Nanocomposite materials with enhanced thermoelectric properties 

      Papageorgiou, Chrysi M. (Πανεπιστήμιο Κύπρου, Πολυτεχνική Σχολή / University of Cyprus, Faculty of Engineering, 2013-06)
      Στην παρούσα διδακτορική διατριβή περιγράφονται και αναλύονται οι θερμοηλεκτρικές ιδιότητες νανοσύνθετων υλικών που έχουν ως βάση το PbTe και το LaCoO3. Δεδομένου ότι ένα μεγάλο μέρος της ενέργειας που χρησιμοποιείται ...
    • Conference Object  

      Thermal, electron transport and far infrared properties of PbTe single crystals doped with Br 

      Nikolic, M. V.; Paraskevopoulos, K. M.; Hatzikraniotis, E.; Nikolic, N.; Vujatovic, S. S.; Aleksic, O. S.; Zorba, T. T.; Kyratsi, Theodora; Menicanin, A.; Nikolic, P. M. (Affiliation: Institute for Multidisciplinary Research, Kneza Viseslava 1, 11000 Beograd, SerbiaAffiliation: Physics Department, Solid State Section, Aristotle University of Thessaloniki, 54214 Thessaloniki, GreeceAffiliation: Institute of Technical Sciences of SASA, Knez Mihailova 35, 11000 Beograd, SerbiaAffiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678 Nicosia, CyprusCorrespondence Address: Nikolic, M.V.Institute for Multidisciplinary Research, Kneza Viseslava 1, 11000 Beograd, Serbia, 2012)
      Understanding the properties of PbTe remains in focus as enhancement of thermoelectric efficiency of this material is studied extensively. In this work single crystals of PbTe, doped with less than 2 at % Br, were synthesized ...
    • Article  

      Thermoelectric properties of nanocrystalline PbTe synthesized by mechanical alloying 

      Papageorgiou, Ch; Hatzikraniotis, E.; Lioutas, Ch B.; Frangis, N.; Valassiades, O.; Paraskevopoulos, K. M.; Kyratsi, Theodora (2010)
      In this work, nanocrystalline lead telluride powder was synthesized from high-purity elements by mechanical alloying by means of a planetary ball-milling procedure. The milling medium was tungsten carbide, and the diameter ...