Carrier-type reversal in Pb–Ge–Se glasses: Photopyroelectric measurements of thermal conductivity and heat capacity
The thermal conductivity and heat capacity of Pb modified Ge–Se glasses, Pb20GexSe80−x (x=17–24) and PbyGe42−ySe58 (y=0–20), which exhibit carrier-type reversal from p type to n type at specific compositions, have been measured simultaneously by the photopyroelectric technique. The thermal conductiv...
Gespeichert in:
Veröffentlicht in: | Applied physics letters 2001-02, Vol.78 (6), p.745-747 |
---|---|
Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The thermal conductivity and heat capacity of Pb modified Ge–Se glasses, Pb20GexSe80−x (x=17–24) and PbyGe42−ySe58 (y=0–20), which exhibit carrier-type reversal from p type to n type at specific compositions, have been measured simultaneously by the photopyroelectric technique. The thermal conductivity as well as the heat capacity show anomalous variations at the compositions at which carrier-type reversals are reported to occur in these glasses. The results are explained in terms of the enhancement in electron concentration during p- to n-type changeover in these materials. |
---|---|
ISSN: | 0003-6951 1077-3118 |
DOI: | 10.1063/1.1345839 |