• DocumentCode
    3364725
  • Title

    Calcium modified lead titanate thin films for pyroelectric applications

  • Author

    Wang, C.M. ; Chen, Y.C. ; Huang, Y.T. ; Kao, M.C.

  • Author_Institution
    Dept. of Electr. Eng., Wufeng Inst. of Technol., Chiayi, Taiwan
  • Volume
    2
  • fYear
    2000
  • fDate
    2000
  • Firstpage
    771
  • Abstract
    Calcium-modified lead titanate (PCT) thin film pyroelectric infrared (IR) detectors were fabricated on Pt(111)/SiO2/Si(100) substrates using a diol-based sol-gel process. The randomly oriented PCT thin film, which has not undergone the poling treatment, exhibits a relatively small dielectric constant and a large pyroelectric coefficient. The pyroelectric properties of PCT thin film point detectors with various Ca contents on modulation frequency are measured and compared. The optimized composition of PCT thin film IR detectors was found to be the PCT(25), which exhibits a large voltage responsivity of 4533 (V/W) at 20 Hz and a specific detectivity (D*) of 6.45 × 107 cmHz1/2/W at 100 Hz The results show that Pb1-xCaxTiO3 thin film with x = 0.25 [PCT(25)] was most suitable for application to the pyroelectric thin film IR detector
  • Keywords
    calcium compounds; ferroelectric materials; ferroelectric thin films; infrared detectors; lead compounds; permittivity; pyroelectric detectors; pyroelectricity; sol-gel processing; 100 Hz; 20 Hz; Ca content; IR detectors; PCT thin film point detectors; Pb1-xCaxTiO3; Pb1-xCaxTiO3 thin film; Pt(111)/SiO2/Si(100) substrates; Pt-SiO2-Si; Si; calcium modified lead titanate thin films; dielectric constant; diol-based sol-gel process; modulation frequency; pyroelectric applications; pyroelectric coefficient; pyroelectric infrared detectors; pyroelectric thin film IR detector; specific detectivity; voltage responsivity; Calcium; Dielectric constant; Dielectric substrates; Dielectric thin films; Frequency modulation; Infrared detectors; Lead; Pyroelectricity; Titanium compounds; Transistors;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
  • Conference_Location
    Honolulu, HI
  • ISSN
    1099-4734
  • Print_ISBN
    0-7803-5940-2
  • Type

    conf

  • DOI
    10.1109/ISAF.2000.942433
  • Filename
    942433
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3364725