Properties of PT/P(VDF-TrFE) pyroelectric sensor based on porous SiO2 substrate

Jinhua Li; Ningyi Yuan; Helen L.W. Chan; Chung-Loong Choy

doi:10.1117/12.447360

30 October 2001 Properties of PT/P(VDF-TrFE) pyroelectric sensor based on porous SiO₂ substrate

Jinhua Li, Ningyi Yuan, Helen L.W. Chan, Chung-Loong Choy

Proceedings Volume 4596, Advanced Photonic Sensors and Applications II; (2001) https://doi.org/10.1117/12.447360
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

Nanosized lead titanate (PT) powder obtained by the Sol-gel method was homogeneously mixed with vinylidene fluoride-trifluoroethylene[P(VDF-TrFE)]. The nanocomposite film was used as the sensing film of PT/P(VDF-TrFE) pyroelectric sensors, whose detective merit was about 20% higher than that of sensors using pure P(VDF-TrFE). Porous silicon with porosity of 69% prepared by electrochemical method was oxidized to porous SiO₂ in wet oxygen. Such porous SiO₂ was chosen as substrate, which can effectively decrease the heat loss due to condition of the substrate. The voltage responsivity was increased and the thermal fluctuation noise of the pyroelectric element was decreased significantly. The experimental results indicated the specific detectivity of PT/P(VDF-TrFE) pyroelectric sensors based on porous SiO₂ substrate was nearly 2 orders of magnitude higher than that of the sensors on bulk SiO₂ substrate formed under the same conditions.

Citation Download Citation

Jinhua Li, Ningyi Yuan, Helen L.W. Chan, and Chung-Loong Choy "Properties of PT/P(VDF-TrFE) pyroelectric sensor based on porous SiO₂ substrate", Proc. SPIE 4596, Advanced Photonic Sensors and Applications II, (30 October 2001); https://doi.org/10.1117/12.447360

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