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APPLIED MATERIALS (AMAT)
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Applied Materials : Studies from F. Liu et al Further Understanding of Applied Materials & Interfaces (Control of the Polarization of Ferroelectric Capacitors by the...

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07/12/2018 | 08:29pm CEST

Studies from F. Liu et al Further Understanding of Applied Materials & Interfaces (Control of the Polarization of Ferroelectric Capacitors by the Concurrent Action of Light and Adsorbates)

By a News Reporter-Staff News Editor at Electronics Newsweekly -- A new study on Materials Research - Applied Materials & Interfaces is now available. According to news reporting originating in Bellaterra, Spain, by VerticalNews journalists, research stated, "Ferroelectric perovskites hold promise of enhanced photovoltaic efficiency and photocatalytic activity. Consequently, the photoresponse of oxide ferroelectric thin films is an active field of research."

Funders for this research include European Regional Development Fund, Ministerio de Economia y Competitividad, Office of Naval Research Global, Generalitat de Catalunya, China Scholarship Council.

The news reporters obtained a quote from the research, "In electrode/ferroelectric/electrode devices, internal charge in the ferroelectric, free charge in the electrodes, and buried adsorbates at interfaces combine to screen the ferroelectric polarization and to stabilize the polar state. Under illumination, photoinduced carriers and photodissociated adsorbates may disrupt the screening equilibrium, modifying the switchable polarization and altering its expected benefits. Here, we explore the photoresponse of BaTiO thin films in a capacitor geometry, focusing on the effects of visible illumination on the remanent polarization. By combining ferroelectric and X-ray photoelectron spectroscopy, we discover that photoreaction of charge-screening HO-derived adsorbates at the buried metal-ferroelectric Pt/BaTiO interface plays an unexpected pivotal role, enabling a substantial modulation (up to 75%) of the switchable remanent polarization by light."

According to the news reporters, the research concluded: "These findings illustrate that the synergy between photochemistry and photovoltaic activity at the surface of a ferroelectric material can be exploited to tune photoferroelectric activity."

For more information on this research see: Control of the Polarization of Ferroelectric Capacitors by the Concurrent Action of Light and Adsorbates. Acs Applied Materials & Interfaces, 2018;():. (American Chemical Society - www.acs.org; Acs Applied Materials & Interfaces - www.pubs.acs.org/journal/aamick)

Our news correspondents report that additional information may be obtained by contacting F. Liu, Institut de Ciencia de Materials de Barcelona (ICMAB-CSIC), Campus UAB, Bellaterra 08193, Catalonia, Spain. Additional authors for this research include I. Fina, G. Sauthier, F. Sanchez, A.M. Rappe and J. Fontcuberta.

The direct object identifier (DOI) for that additional information is: https://doi.org/10.1021/acsami.8b05751. This DOI is a link to an online electronic document that is either free or for purchase, and can be your direct source for a journal article and its citation.

Keywords for this news article include: Spain, Europe, Bellaterra, Electronics, Photovoltaic, Materials Research, Applied Materials & Interfaces.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2018, NewsRx LLC

(c) 2018 NewsRx LLC, source Technology Newsletters

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