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https://hdl.handle.net/1822/43592
Título: | Light controlled resistive switching and photovoltaic effects in ferroelectric 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 thin films |
Autor(es): | Silva, J. P. B. Kamakshi, Koppole Sekhar, K. C. Nóvoa, X. R. Queirós, E. C. Moreira, J. Agostinho Almeida, A. Pereira, Mário Tavares, P. B. Gomes, M. J. M. |
Palavras-chave: | Light controlled resistive switching Photovoltaic effect (0.5BZT-0.5BCT) thin films Ferroelectricity |
Data: | 2017 |
Editora: | Elsevier |
Revista: | Journal of European Ceramic Society |
Resumo(s): | In this work, the structural and ferroelectric properties of 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (0.5BZT-0.5BCT) thin films deposited at different pulse repetition rates were studied. The films deposited at pulse repetition rate of 1 Hz display the optimum values of ferroelectric polarization and dielectric permittivity and are chosen for the investigation of resistive switching and photovoltaic studies. The Pt/0.5BZT-0.5BCT/ITO capacitors show the electroforming free resistive switching (RS) and is explained based on the polarization modulation of the Schottky barrier at the 0.5BZT-0.5BCT/ITO interface. Furthermore, it is shown that the RS ratio and switching voltage can be tuned with white light illumination. The capacitors display photovoltaic effect with the open circuit voltage ≈0.8 V and the short circuit current density ≈72.6 μAcm−2. The photovoltaic efficiency is found to be ≈0.010% and is greater than that of other perovskite ferroelectric thin films. The underlying mechanism for enhanced RS and photovoltaic effects is highlighted. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/43592 |
DOI: | 10.1016/j.jeurceramsoc.2016.09.011 |
ISSN: | 0955-2219 |
Versão da editora: | http://dx.doi.org/10.1016/j.jeurceramsoc.2016.09.011 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CDF - FMNC - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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1-s2.0-S0955221916305052-main.pdf Acesso restrito! | 3,71 MB | Adobe PDF | Ver/Abrir |