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Latest Development in Photo-Induced Current of Ferroelectric Thin Films
Pages: 710-717
Year: Issue:  6
Journal: Vacuum Science and Technology

Keyword:  Ferroelectric filmsPhoto-induced currentConversion efficiencyMechanismProgress;
Abstract: The latest progress in the field of photo-induced current of ferroelectric coatings and devices was tentatively reviewed.The discussions focused on;ⅰ) its increasingly wide applications in optoelectronics,energyconversion and information storage;ⅱ) the influence of the bulk properties of ferroelectric thin films,including but not limited to the band gap,polarization,barrier height at interface,microstructures of domain,grain size,depolarization field,oxygen vacancies,absorption coefficient,conductivity,and carrier lifetime,on the photo-electric conversion efficiency;ⅲ) the existing technical problems,limiting the separation rate and collection efficiency of the carriers of the ferroelectric coatings,and their engineering solutions via innovative design of novel photovoltaic devices;ⅳ) the controversial mechanisms responsible for the generation of photo-induced current.In addition,the development trends of the ferroelectric photovoltaic devices were also briefly discussed in a though provoking way.
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