P-Type and N-Type Bi2Te3/PbTe Functional Gradient Materials for Thermoelectric Power Generation

Abstract:

Article Preview

The p-type (Bi0.2Sb0.8)2Te3/(Pb0.7Sn0.3)Te functional gradient material (FGM) was fabricated by hot-pressing the mechanically alloyed (Bi0.2Sb0.8)2Te3 and the 0.5 at% Na2Te-doped (Pb0.7Sn0.3)Te powders. Also, the n-type Bi2(Te0.9Se0.1)3/PbTe FGM was processed by hot-pressing the mechanically alloyed Bi2(Te0.9Se0.1)3 and the 0.3 wt% Bi-doped PbTe powders. With △T larger than 300°C, the p-type (Bi0.2Sb0.8)2Te3/(Pb0.7Sn0.3)Te FGM exhibited larger thermoelectric output power than those of the (Bi0.2Sb0.8)2Te3 and the 0.5 at% Na2Te-doped (Pb0.7Sn0.3)Te alloys. For the n-type Bi2(Te0.9Se0.1)3/PbTe FGM, the thermoelectric output power superior to those of the Bi2(Te0.9Se0.1)3 and the 0.3 wt% Bi-doped PbTe was predicted at △T larger than 300°C.

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim

Pages:

1493-1496

DOI:

10.4028/www.scientific.net/MSF.534-536.1493

Citation:

K. Y. Lee and T. S. Oh, "P-Type and N-Type Bi2Te3/PbTe Functional Gradient Materials for Thermoelectric Power Generation", Materials Science Forum, Vols. 534-536, pp. 1493-1496, 2007

Online since:

January 2007

Export:

Price:

$38.00

[1] M. A. Ryan and J-P. Fleurial: Electochem. Soc. Interface Vol. 11 (2002) p.30.

[2] Y. S. Kang, M. Niino, I. A. Ishida, and J. Yoshino, in Proc. 17th Int. Conf. on Thermoelectrics, Nagoya (1998) p.429.

[3] M. Koshigoe, Y. Kudo, M. Hashimoto, I. Shiota, and I. A. Nishida, in Proc. 17th Int. Conf. on Thermoelectrics, Nayoya (1998) p.479.

[4] I. Shiota and I. A. Nishida, in Proc. 16th Int. Conf. on Thermoelectrics, Dresden (1997) p.364.

[5] T. C. Harman, J. H. Cahn and M. J. Logan: J. Appl. Phys. Vol. 30 (1959) p.9. 01234.

[5] [10] [15] [20] BiTeSe PbTe FGM Output power (mW) Current (A) (a) 02468.

[20] [40] [60] [80] BiTeSe PbTe FGM Output power (mW) Current (A) (b) 024681012.

[20] [40] [60] [80] 100 120 140 160 BiTeSe PbTe FGM Output power (mW) Current (A) (c).

In order to see related information, you need to Login.