(Mn, Sb)-doped PZT and Nb-doped PZT uncooled IR detectors

Yuqing Xu; Alex Ignatiev; Naijuan Wu; Y. Q. Wang

doi:10.1117/12.354535

26 July 1999 (Mn, Sb)-doped PZT and Nb-doped PZT uncooled IR detectors

Yuqing Xu, Alex Ignatiev, Naijuan Wu, Y. Q. Wang

Proceedings Volume 3698, Infrared Technology and Applications XXV; (1999) https://doi.org/10.1117/12.354535
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Mn and Sb-doped Pb(Zr, Ti)O₃ (PMSZT) and Nb-doped PZT (PNZT) thin film IR detectors have been integrated with Si substrates. A conducting YBCO layer in the IR detector was used as an atomic template for the epitaxial growth of the PMSZT and PNZT thin films, as well as a good IR-reflector. The epitaxial PMSZT and PNZT thin films were self-polarized and exhibited pyroelectric current even without any additional poling. The PMSZT and PNZT detectors were examined as to their pyroelectric current in response to the detector temperature. Doping with Mn and Sb into PZT and doping with Nb into PZT have been shown not only to decrease the Curie temperature T_c, but also increases pyroelectric current significantly in comparison with that of PZT thin films. The PMSZT detectors show high figures of merit, F_v of 1768 cm²/C and F_d of 0.048 (cm³/J)^1/2 at 25 degrees C and F_d of 0.135 (cm³/J)^1/2 at approximately 90 degrees C. The measured normalized detectivity D*, ranging from 2.5 X 10⁸ to 6.0 X 10⁸ cmHz^1/2/W in the 2.5-19.5 micrometers wavelength band, indicated that PMSZT detectors are suitable for broad band IR detector applications. A PMSZT IR detector array with a micro-bridge for thermal isolation has also been fabricated.

Citation Download Citation

Yuqing Xu, Alex Ignatiev, Naijuan Wu, and Y. Q. Wang "(Mn, Sb)-doped PZT and Nb-doped PZT uncooled IR detectors", Proc. SPIE 3698, Infrared Technology and Applications XXV, (26 July 1999); https://doi.org/10.1117/12.354535

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available