Imperial College London
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ProfessorRogerWhatmore

Faculty of Engineering, Department of Materials

Visiting Professor
 
 
 
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Contact

 

r.whatmore

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Berenov:2021:10.1063/5.0039593,
author = {Berenov, A and Petrov, P and Moffat, B and Phair, J and Allers, L and Whatmore, R},
doi = {10.1063/5.0039593},
journal = {APL Materials},
title = {Pyroelectric and photovoltaic properties of Nb doped PZT thin films},
url = {http://dx.doi.org/10.1063/5.0039593},
volume = {9},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Nb-doped lead zirconate titanate (PZT) films with up to 12 at. % of Nb were co-sputtered from oxide PZT and metallic Nb targets at a substrate temperature of 600 °C. Up to 4 at. % of Nb was doped into the perovskite structure with the formation of B-site cation vacancies for charge compensation. The preferential (111) PZT orientation decreased with Nb-doping within the solid solution region. The ferroelectric response of the films was affected by the large values of the internal field present in the samples (e.g., −84.3 kV cm−1 in 12 at. % Nd doped films). As-deposited unpoled films showed large values of the pyroelectric coefficient due to self-poling. The pyroelectric coefficient increased with Nb-doping and showed a complex dependence on the applied bias. The photovoltaic effect was observed in the films. The value of the photocurrent increased with the A/B ratio. The combined photovoltaic–pyroelectric effect increased the values of the measured current by up to 47% upon light illumination.
AU  - Berenov,A
AU  - Petrov,P
AU  - Moffat,B
AU  - Phair,J
AU  - Allers,L
AU  - Whatmore,R
DO  - 10.1063/5.0039593
PY  - 2021///
SN  - 2166-532X
TI  - Pyroelectric and photovoltaic properties of Nb doped PZT thin films
T2  - APL Materials
UR  - http://dx.doi.org/10.1063/5.0039593
UR  - http://hdl.handle.net/10044/1/88946
VL  - 9
ER  -
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