Photovoltaic effect in rhombohedral and tetragonal phase BiFeO3 ferroelectric thin films

2018 ◽  
Vol 192 (1) ◽  
pp. 146-153
Author(s):  
Rongli Gao ◽  
Chunlin Fu ◽  
Wei Cai ◽  
Gang Chen ◽  
Xiaoling Deng ◽  
...  
Keyword(s):  
Thin Films ◽  
Tetragonal Phase ◽  
Photovoltaic Effect ◽  
Ferroelectric Thin Films

Quantitative investigation of polarization-dependent photocurrent in ferroelectric thin films

2021 ◽  
Author(s):  
Komalika Rani ◽  
Sylvia Matzen ◽  
Stéphane Gable ◽  
Thomas Maroutian ◽  
Guillaume Agnus ◽  
...  
Keyword(s):  
Thin Films ◽  
Photovoltaic Effect ◽  
Quantitative Relationship ◽  
Open Circuit ◽  
Ferroelectric Thin Films ◽  
Ferroelectric Polarization ◽  
Ferroelectric Layer ◽  
Ferroelectric Memories ◽  
Careful Investigation

Abstract Ferroelectric thin films are investigated for their potential in photovoltaic (PV) applications, owing to their high open-circuit voltage and switchable photovoltaic effect. The direction of the ferroelectric polarization can control the sign of the photocurrent through the ferroelectric layer, theoretically allowing for 100 percent switchability of the photocurrent with the polarization, which is particularly interesting for photo-ferroelectric memories. However, the quantitative relationship between photocurrent and polarization remains little studied. In this work, a careful investigation of the polarization-dependent photocurrent of epitaxial Pb(Zr,Ti)O3 thin films has been carried out, and has provided a quantitative determination of the unswitchable part of ferroelectric polarization. These results represent a systematic approach to study and optimize the switchability of photocurrent, and more broadly to get important insights on the ferroelectric behavior in all types of ferroelectric layers in which pinned polarization is difficult to investigate.

Enhanced photovoltaic effect in Bi2FeMo0.7Ni0.3O6 ferroelectric thin films by tuning the thickness

2020 ◽  
Vol 8 (4) ◽  
pp. 1359-1365 ◽  
Author(s):  
Xiaxia Cui ◽  
Yong Li ◽  
Xiaowei Li ◽  
Xihong Hao
Keyword(s):  
Thin Films ◽  
Driving Force ◽  
Photovoltaic Effect ◽  
Photovoltaic Performance ◽  
Ferroelectric Thin Films

An enhanced photovoltaic performance is achieved by self-polarization of Bi2FeMo0.7Ni0.3O3 ferroelectric thin films by tuning the driving force based on the change of thickness.

Photovoltaic Effect in Thin Ferroelectric Films

1991 ◽  
Vol 243 ◽  
Author(s):  
Philip S. Brody ◽  
B. J. Rod ◽  
L. P. Cook ◽  
P. K. Schenck
Keyword(s):  
Thin Films ◽  
Photovoltaic Effect ◽  
Ferroelectric Thin Films ◽  
Polarization Field ◽  
Polarization Reversal ◽  
Ferroelectric Films ◽  
Initial Current ◽  
Elapsed Time ◽  
Steady Current

AbstractPolarization-dependent photovoltaic currents are observed in continuously illuminated ferroelectric thin films under conditions of polarization reversal. Following reversal, an initial current rapidly decays to an essentially steady current, which then decays slowly with the current decreasing in proportion to the logarithm of elapsed time. These polarization-dependent currents are attributed to the action of internal fields on photocarriers where the fields result from the incomplete screening of the polarization field.

SrBi2Nb2O9 ferroelectric thin films

1998 ◽  
Vol 08 (PR9) ◽  
pp. Pr9-225-Pr9-228
Author(s):  
J. H. Yi ◽  
P. Thomas ◽  
M. Manier ◽  
J. P. Mercurio ◽  
I. Jauberteau ◽  
...  
Keyword(s):  
Thin Films ◽  
Ferroelectric Thin Films

SrBi2Nb2O9 ferroelectric thin films deposited by pulsed laser deposition on textured and epitaxied platinum electrodes

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-133-Pr11-137
Author(s):  
J. R. Duclère ◽  
M. Guilloux-Viry ◽  
A. Perrin ◽  
A. Dauscher ◽  
S. Weber ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Ferroelectric Thin Films ◽  
Laser Deposition ◽  
Platinum Electrodes

Phase transformation and preferred orientation in carboxylate derived ZrO2 thin films on silicon substates

1992 ◽  
Vol 7 (11) ◽  
pp. 3065-3071 ◽  
Author(s):  
Peir-Yung Chu ◽  
Isabelle Campion ◽  
Relva C. Buchanan
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Phase Transformation ◽  
Heating Rate ◽  
Tetragonal Phase ◽  
Monoclinic Phase ◽  
Preferred Orientation ◽  
Si Substrate ◽  
Interfacial Diffusion ◽  
Deposited Films

Phase transformation and preferred orientation in ZrO2 thin films, deposited on Si(111) and Si(100) substrates, and prepared by heat treatment from carboxylate solution precursors were investigated. The deposited films were amorphous below 450 °C, transforming gradually to the tetragonal and monoclinic phases on heating. The monoclinic phase developed from the tetragonal phase displacively, and exhibited a strong (111) preferred orientation at temperature as low as 550 °C. The degree of preferred orientation and the tetragonal-to-monoclinic phase transformation were controlled by heating rate, soak temperature, and time. Interfacial diffusion into the film from the Si substrate was negligible at 700 °C and became significant only at 900 °C, but for films thicker than 0.5 μm, overall preferred orientation exceeded 90%.

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