Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-25T17:50:07.246Z Has data issue: false hasContentIssue false
  • English
  • Français

(Mn, Sb) Doped-PZT/YBa2Cu3O7-y Heterostructure for IR Detector Array

Published online by Cambridge University Press:  10 February 2011

Y. Q. Xu ,
N. J. Wu ,
D. Liu  and
A. Ignatiev
Y. Q. Xu
Affiliation:
Space Vacuum Epitaxy Center and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5507
N. J. Wu
Affiliation:
Space Vacuum Epitaxy Center and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5507
D. Liu
Affiliation:
Space Vacuum Epitaxy Center and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5507
A. Ignatiev
Affiliation:
Space Vacuum Epitaxy Center and Texas Center for Superconductivity, University of Houston, Houston, TX 77204-5507
Get access

Abstract

Mn and Sb doped-PZT (PMSZT)/YBa2Cu3O7−y (YBCO) heterostructures have been integrated with YSZ/Si substrates for fabrication of infrared (IR) detector arrays. PMSZT films with good epitaxy on c-oriented YBCO conducting oxide electrodes have been successfully grown by a pulsed laser ablation deposition. The ferroelectric properties of the PMSZT films show good hystersis loops with a coercive field Ec, of 70 kV/cm and a remnant polarization Pr, of 15μC/cm2. I-V curves show that the PMSZT films have high electrical field breakdown strength with values exceeding 400kV/cm. Doping Mn and Sb into PZT has been shown to not only decrease the Curie temperature Tc from 350°C for PZT to 175°C for PMSZT, but also to enhance the IR responsivity of the pyroelectric thin films. PMSZT detectors have a pyroelectric coefficient of 45nC/cm2K at 25°C and 148nC/cm2K at 88°C, and pyroelectric figures of merit, Fv of 15.5 × 10−11 C. cm/J and Fd of 9.5 × 10−9 C. cm/J at 25°C. The measured normalized detectivity D* in the 2.5μm--19.5μm wavelength range varies from 2.5×108cm. Hz1/2/W to 6.0×108cm. Hz1/2/W.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 493: Symposium U – Ferroelectric Thin Film VI , 1997 , 481
Copyright
Copyright © Materials Research Society 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Whatmore, R. W.. Ferroelectrics, 118, 241 (1991).Google Scholar
2. Takayama, R. and Tomita, Y., J. Appl. Phys., 65, 1666 (1989).Google Scholar
3. Hossain, A. and Rashid, M. H., IEEE Transactions On Industry Applications, 27, 824 (1991).Google Scholar
4. Owen, R., Belcher, J., Beratan, H., and Frank, S. in Infrared Detectors and Focal Plane Arrays IV. edited by Dereniak, E. L. and Sampson, R. E. (SPIE vol. 2746, Orlando, 10-11 April 1996) 101–112.Google Scholar
5. Takayama, R. and Tomita, Y., Ferroelectrics, 118, 325 (1991).Google Scholar
6. Polla, D. L., Ye, C. P., and Tamagawa, T., Appl. Phys. Lett., 59, 3539 (1991).Google Scholar
7. Kruse, P. W., Proc. 9th IEEE Intl. Symposium on Application of Ferroelectrics, University Park. PA, edited by Pandey, R. K., Liu, M., Safari, A., IEEE Catalog Number 94CH3416-5), 643 (1995).Google Scholar
8. Borrello, S., Teaxs Inst. Tech. J., 8, 20 (1991).Google Scholar
9. Wu, N. J., Liu, D., Chen, Y. S., Lin, H., Zomorrodian, A. R., and Ignatiev, A. in Infrared Detectors and Focal Plane Arrays IV. edited by Dereniak, E. L. and Sampson, R. E. (SPIE vol. 2746. Orlando, 10-11 April 1996) 172–177.Google Scholar
10. Wu, N. J., Ignatiev, A., and Mesarwi, A., Lin, H., Xie, K., and Shih, H., Jpn. J. Appl. Phys., 32, 5019 (1993).Google Scholar
11. Zomorrodian, A. R., Wu, N. J., Lin, H., Huang, T. Q., Li, X. Y., and Ignatiev, A., J. Appl. Phys., 78. 4780(1995).Google Scholar