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

doi:10.1143/jjap.35.2731

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 journal › Article › peer-review

29 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. τ_t (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 language	English
Pages (from-to)	2731-2733
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	35
Issue number	5 SUPPL. A
DOIs	https://doi.org/10.1143/jjap.35.2731
Publication status	Published - 1996 May
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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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, 05.1996, p. 2731-2733.

Research output: Contribution to journal › Article › peer-review

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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.",

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AU - Kim, Yong Chun

AU - Jeong, In Seop

AU - Lee, Won Jong

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AB - 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.

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