Pyroelectric properties of sol-gel derived lanthanum modified lead titanate thin films

Kwangsoo No, Chaun Gi Choi, Dae Sung Yoon, Tae Hyun Sung, Yong Chun Kim, In Seop Jeong, Won Jong Lee

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Lanthanum-modified lead titanate (PLT) thin films were fabricated on Pt/Ti/SiO2/Si substrate using the sol-gel method and rapid thermal annealing technique. The pyroelectric coefficient, and the infrared responsivity and the detectivity of the films were measured using static and dynamic methods, respectively. The ferroelectric properties were also measured. The pyroelectric coefficient increased from 1.3 to 2.5 nC/cm2·K with increasing La content. However, these low coefficients of PLT films are due to their crystal quality and orientations. The infrared response properties of PLT films depended on their thermal time constants. τt (thermal time constant) for the PLT films decreased with the La contents increasing. The effects of back surface etching on the responsivity and the detectivity were also discussed.

Original languageEnglish
Pages (from-to)2731-2733
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume35
Issue number5 SUPPL. A
Publication statusPublished - 1996 May 1
Externally publishedYes

Fingerprint

Lanthanum
lanthanum
Sol-gels
gels
Thin films
thin films
time constant
coefficients
Infrared radiation
Rapid thermal annealing
Crystal orientation
Sol-gel process
Ferroelectric materials
Etching
Lead
etching
Crystals
annealing
Substrates
crystals

Keywords

  • Back surface etching
  • Detectivity
  • PLT thin film
  • Pyroelectric coefficient
  • Sol-gel process

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Pyroelectric properties of sol-gel derived lanthanum modified lead titanate thin films. / No, Kwangsoo; Choi, Chaun Gi; Yoon, Dae Sung; Sung, Tae Hyun; Kim, Yong Chun; Jeong, In Seop; Lee, Won Jong.

In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 35, No. 5 SUPPL. A, 01.05.1996, p. 2731-2733.

Research output: Contribution to journalArticle

No, Kwangsoo ; Choi, Chaun Gi ; Yoon, Dae Sung ; Sung, Tae Hyun ; Kim, Yong Chun ; Jeong, In Seop ; Lee, Won Jong. / Pyroelectric properties of sol-gel derived lanthanum modified lead titanate thin films. In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 1996 ; Vol. 35, No. 5 SUPPL. A. pp. 2731-2733.
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AU - Jeong, In Seop

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