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 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 |
| Publication status | Published - 1996 May 1 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Pyroelectric properties of sol-gel derived lanthanum modified lead titanate thin films
AU - No, Kwangsoo
AU - Choi, Chaun Gi
AU - Yoon, Dae Sung
AU - Sung, Tae Hyun
AU - Kim, Yong Chun
AU - Jeong, In Seop
AU - Lee, Won Jong
PY - 1996/5/1
Y1 - 1996/5/1
N2 - 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.
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.
KW - Back surface etching
KW - Detectivity
KW - PLT thin film
KW - Pyroelectric coefficient
KW - Sol-gel process
UR - http://www.scopus.com/inward/record.url?scp=0030146514&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030146514&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0030146514
VL - 35
SP - 2731
EP - 2733
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 5 SUPPL. A
ER -