Large temperature hysteresis in transport properties of Cu2Se (CROSBI ID 678089)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Zorić, Marija ; P. Gille, P. ; Smontara, Ana ; Popčević, Petar
engleski
Large temperature hysteresis in transport properties of Cu2Se
Cu2Se, as a competitive thermoelectric material, has attracted much attention in recent developments of thermoelectrics, due to the large figure of merit (ZT), which is among highest for single crystalline compounds (1.5 at 1000K). The excellent thermoelectric performance of Cu2Se is associated with its superionic behavior in the high-temperature β-phase. Although β-phase was extensively investigated, comprehensive insight of α phase (low temperature phase) is still lacking. Thus, we started more detailed investigation of transport properties of CuxSe at low temperatures. The properties of CuxSe α phase considerably depend on x and so does the transition temperature from low-temperature α phase to high-temperature β phase. Our results suggest presence of additional phase transition from α to α' phase at lower temperatures and show large temperature hysteresis. Furthermore, our results are consistent that composition of the samples investigated here are close to phase boundary and due to this show enhanced metallic behavior.
Cu2Se, thermoelectric material
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Podaci o prilogu
68-68.
2019.
objavljeno
Podaci o matičnoj publikaciji
Solid-State Science & Research Meeting
Zagreb:
Podaci o skupu
Solid State Science and Research Meeting
poster
27.06.2019-29.06.2019
Zagreb, Hrvatska