Boosting Photovoltaic Output of Ferroelectric Ceramics by Optoelectric Control of Domains
© 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 43 vom: 27. Okt., Seite e1803821 |
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| Weitere Verfasser: | , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2018
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article ceramics efficiency boost multisource energy harvesting photovoltaic photo‐ferroelectric |
| Zusammenfassung: | © 2018 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. Photo-ferroelectric single crystals and highly oriented thin-films have been extensively researched recently, with increasing photovoltaic energy conversion efficiency (from 0.5% up to 8.1%) achieved. Rare attention has been paid to polycrystalline ceramics, potentially due to their negligible efficiency. However, ceramics offer simple and cost-effective fabrication routes and stable performance compared to single crystals and thin-films. Therefore, a significantly increased efficiency of photo-ferroelectric ceramics contributes toward widened application areas for photo-ferroelectrics, e.g., multisource energy harvesting. Here, all-optical domain control under illumination, visible-range light-tunable photodiode/transistor phenomena and optoelectrically tunable photovoltaic properties are demonstrated, using a recently discovered photo-ferroelectric ceramic (K0.49Na0.49Ba0.02)(Nb0.99Ni0.01)O2.995. For this monolithic material, tuning of the electric conductivity independent of the ferroelectricity is achieved, which previously could only be achieved in organic phase-separate blends. Guided by these discoveries, a boost of five orders of magnitude in the photovoltaic output power and energy conversion efficiency is achieved via optical and electrical control of ferroelectric domains in an energy-harvesting circuit. These results provide a potentially supplementary approach and knowledge for other photo-ferroelectrics to further boost their efficiency for energy-efficient circuitry designs and enable the development of a wide range of optoelectronic devices |
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| Beschreibung: | Date Completed 03.01.2019 Date Revised 01.10.2020 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.201803821 |