Polarization controlled photovoltaic and self-powered photodetector characteristics in Pb-free ferroelectric thin film
Atal Bihari Swain,Martando Rath,Pranab Parimal Biswas,M. S. Ramachandra Rao,Pattukkannu Murugavel +4 more
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TLDR
In this article, a switchable and large PV effect is demonstrated in a Pb-free ferroelectric 0.5Ba(Zr0.7Ca0.2Ti0.3)TiO3 (BZT-BCT) thin film fabricated by a pulsed laser deposition technique.Abstract:
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.read more
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Ferroelectric Materials for Solar Energy Conversion: Photoferroics Revisited
TL;DR: The application of ferroelectric materials (i.e. solids that exhibit spontaneous electric polarisation) in solar cells has a long and controversial history as mentioned in this paper, and the recent successful application of inorganic and hybrid perovskite structured materials (e.g. BiFeO3, CsSnI3, CH3NH3PbI3) emphasises that polar semiconductors can be used in conventional photovoltaic architectures.
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An Efficient Way to Assemble ZnS Nanobelts as Ultraviolet-Light Sensors with Enhanced Photocurrent and Stability
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TL;DR: In this paper, an efficient and low-cost method to achieve high-performance "visible-blind" microscale ZnS nanobelt-based ultraviolet (UV)-light sensors without using a lithography technique, by increasing the surface areas exposed to light, is reported.
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Boosting Photocurrent via Heating BiFeO3 Materials for Enhanced Self‐Powered UV Photodetectors
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Growth of Carbon Dot-Decorated ZnO Nanorods on a Graphite-Coated Paper Substrate to Fabricate a Flexible and Self-Powered Schottky Diode for UV Detection.
TL;DR: The fabrication of self-powered, carbon dot (CD) enhanced, flexible ZnO/graphite heterojunction based UV detector, where cellulose paper has been used as the substrate with Schottky characteristics is reported.
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Switchable ferroelectric diode and photovoltaic effects in polycrystalline BiFeO3 thin films grown on transparent substrates
Yong Zhou,Can Wang,Shilu Tian,Xiaokang Yao,Chen Ge,Er-Jia Guo,Meng He,Guozhen Yang,Kuijuan Jin +8 more
TL;DR: In this article, a polycrystalline BiFeO3 (BFO) thin film on a transparent substrate also has the ferroelectric switchable diode and photovoltaic effects.
References
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First-principles calculation of the bulk photovoltaic effect in KNbO 3 and (K,Ba)(Ni,Nb) O 3 − δ
Fenggong Wang,Andrew M. Rappe +1 more
TL;DR: In this article, the effect of structural phase, lattice distortion, oxygen vacancies, cation arrangement, composition, and strain on the shift current of the bulk photovoltaic effect was investigated.
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Photostrictive effect in lanthanum-modified lead zirconate titanate ceramics near the morphotropic phase boundary
Patcharin Poosanaas,Kenji Uchino +1 more
TL;DR: In this paper, the photostrictive effect in lanthanum-modified lead zirconate titanate (PLZT) ceramics has been investigated with different contents of La and the ratio of Zr/Ti near the morphotropic phase boundary compositions.
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Bulk photovoltaic effect in monodomain BiFeO3 thin films
Dong Jik Kim,Marin Alexe +1 more
TL;DR: In this paper, the photovoltaic current of BiFeO3 ferroelectric semiconductors possesses a preferred direction depending on the light polarization direction and working temperature, which is not along the Ferroelectric polarization direction.