A Photovoltaic UV Sensor With a Ferroelectric Thin Film on Transparent Substrate

A photovoltaic ultraviolet (UV) sensor is designed with a unique structure comprising of an in-plane polarized ferroelectric lead lanthanum zirconate titanate (PLZT) thin film on a transparent silica substrate and with an interdigital electrodes on the top surface. Both the experimental measurements...

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Bibliographic Details
Published in:IEEE electron device letters 2013-11, Vol.34 (11), p.1427-1429
Main Authors: Lai, Szu Cheng, Yao, Kui, Chen, Yi Fan, Zhang, Lei, Lim, Yee-Fun
Format: Article
Language:English
Subjects:
Applied sciences
Design. Technologies. Operation analysis. Testing
Electrodes
Electronics
Exact sciences and technology
Ferroelectrics
General equipment and techniques
Hygrometers
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Integrated circuits
Optical polarization
photovoltaic
Photovoltaic systems
Physics
polarized ferroelectric lead lanthanum zirconate titanate (PLZT) thin film
Radiation effects
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sensors (chemical, optical, electrical, movement, gas, etc.)
remote sensing
Silicon compounds
Substrates
transparent substrate
ultraviolet (UV) sensor
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Summary:A photovoltaic ultraviolet (UV) sensor is designed with a unique structure comprising of an in-plane polarized ferroelectric lead lanthanum zirconate titanate (PLZT) thin film on a transparent silica substrate and with an interdigital electrodes on the top surface. Both the experimental measurements and theoretical analyses showed that the UV sensor exhibited significantly enhanced responses with the incident UV irradiation input from the silica substrate in comparison with that from the top surface of the PLZT film. The proposed device configuration leads to a cost-effective scratch- and moisture-proof UV sensor with a flip-chip package, which promises great robustness for UV monitoring in harsh conditions.
ISSN:0741-3106
1558-0563
DOI:10.1109/LED.2013.2282393