1000
1000
o
350 C Annealing
100 o
300 C Annealing
Vacuum Dry
10
50
Seebeck / (V/K)
100 150 200 Temperature / K
-100
250
o
400 C Annealing
Bi0.5Sb1.5Te3 NCs o
380 C Annealing
100 350 oC Annealing 300 oC Annealing
Vacuum Dry
10
300
50
350
o
380 C Annealing o 350 C Annealing o 300 C Annealing Vacuum Dry
-120
Tunable plasmonic absorption spectra of Cu2-xS nanocrystals prepared from a sonoelectrochemical approach.
Electrical Conductivity / (S/cm)
Bi2Te3 NCs
Bi2Te3 NCs
-80 -60 -40
100 150 200 Temperature / K
250
300
o
400 C Annealing o 380 C Annealing o 350 C Annealing o 300 C Annealing Vacuum Dry
300
Seebeck / (V/K)
Electrical conductivity / (S/cm)
o
380 C Annealing
250
Bi0.5Sb1.5Te3 NCs
200 150 100
-20
50 0
50
100
150
200
250
0
300
50
Temperature / K
6
6
1.0x10
5
5.0x10
100
150
200
Temperature / K
250
400 C Annealing o 380 C Annealing o 350 C Annealing o 300 C Annealing Vacuum Dry
7
1.5x10
1.5x10
50
High quality tertiary thermoelectric nanocrystals prepared by a wet chemistry approach.
Bi2Te3 NCs Power Factor / (S V2 cm-1 K-2 )
Power Factor / (S V2 cm-1 K-2 )
6
2.0x10
150
200
Temperature / K
250
300
o
o
380 C Annealing o 350 C Annealing o 300 C Annealing Vacuum Dry
6
2.5x10
100
300
Bi0.5Sb1.5Te3 NCs
7
1.0x10
6
5.0x10
0.0 50
100
150
200
250
300
Temperature / K
Effect of annealing temperature on the transport properties of thermoelectric nanocrystals.
Prof. Clemens Burda, Chemistry, Case Western Reserve University
