Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film

Ferroelectrics are considered next generation photovoltaic (PV) materials. In this work, a switchable and large PV effect is demonstrated in a Pb-free ferroelectric 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BZT-BCT) thin film fabricated by a pulsed laser deposition technique. The material shows a rem...

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Main Authors: Atal Bihari Swain, Martando Rath, Pranab Parimal Biswas, M. S. Ramachandra Rao, P. Murugavel
Format: Article
Language:English
Published: AIP Publishing LLC 2019-01-01
Series:APL Materials
Online Access:http://dx.doi.org/10.1063/1.5064454
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spelling doaj-f406e20c729649a8b09138abeb6483a52020-11-24T22:03:15ZengAIP Publishing LLCAPL Materials2166-532X2019-01-0171011106011106-710.1063/1.5064454004901APMPolarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin filmAtal Bihari Swain0Martando Rath1Pranab Parimal Biswas2M. S. Ramachandra Rao3P. Murugavel4Department of Physics, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Physics, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Physics, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Physics, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Physics, Indian Institute of Technology Madras, Chennai 600036, IndiaFerroelectrics are considered next generation photovoltaic (PV) materials. In this work, a switchable and large PV effect is demonstrated in a Pb-free ferroelectric 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BZT-BCT) thin film fabricated by a pulsed laser deposition technique. The material shows a remarkable PV output of 0.81 V due to its morphotropic phase boundary composition. The observed PV effect is analyzed on the basis of the interfacial Schottky barrier and bulk depolarization field. The poling dependent PV studies revealed that although the Schottky and depolarization field contribute to the PV effect, the latter dominates the PV response beyond the coercive field. Additionally, the importance of this compound in the field of a self-biased photodetector is elucidated in terms of calculated photodetector parameters such as responsivity and detectivity. The explored results will bring significant advancement in the field of ferroelectric PV, UV solid state detector applications and also give an additional dimension to the multifunctional ability of the BZT-BCT system.http://dx.doi.org/10.1063/1.5064454
collection DOAJ
language English
format Article
sources DOAJ
author Atal Bihari Swain
Martando Rath
Pranab Parimal Biswas
M. S. Ramachandra Rao
P. Murugavel
spellingShingle Atal Bihari Swain
Martando Rath
Pranab Parimal Biswas
M. S. Ramachandra Rao
P. Murugavel
Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film
APL Materials
author_facet Atal Bihari Swain
Martando Rath
Pranab Parimal Biswas
M. S. Ramachandra Rao
P. Murugavel
author_sort Atal Bihari Swain
title Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film
title_short Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film
title_full Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film
title_fullStr Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film
title_full_unstemmed Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film
title_sort polarization controlled photovoltaic and self-powered photodetector characteristics in pb-free ferroelectric thin film
publisher AIP Publishing LLC
series APL Materials
issn 2166-532X
publishDate 2019-01-01
description Ferroelectrics are considered next generation photovoltaic (PV) materials. In this work, a switchable and large PV effect is demonstrated in a Pb-free ferroelectric 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BZT-BCT) thin film fabricated by a pulsed laser deposition technique. The material shows a remarkable PV output of 0.81 V due to its morphotropic phase boundary composition. The observed PV effect is analyzed on the basis of the interfacial Schottky barrier and bulk depolarization field. The poling dependent PV studies revealed that although the Schottky and depolarization field contribute to the PV effect, the latter dominates the PV response beyond the coercive field. Additionally, the importance of this compound in the field of a self-biased photodetector is elucidated in terms of calculated photodetector parameters such as responsivity and detectivity. The explored results will bring significant advancement in the field of ferroelectric PV, UV solid state detector applications and also give an additional dimension to the multifunctional ability of the BZT-BCT system.
url http://dx.doi.org/10.1063/1.5064454
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