Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite
Abstract Flexoelectricity is an electromechanical coupling effect in which electric polarization is generated by a strain gradient. In this investigation, a potassium sodium niobite/poly(vinylidene fluoride‐trifluoroethylene) (KNN/PVDF‐TrFE)‐based nanocomposite is fabricated, and the flexoelectric e...
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| Format: | Article |
| Language: | English |
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Wiley
2021-04-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202004554 |
| _version_ | 1818455713686487040 |
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| author | Chenchen Wang Yang Zhang Bowen Zhang Bo Wang Jinxi Zhang Long‐Qing Chen Qiming Zhang Zhong Lin Wang Kailiang Ren |
| author_facet | Chenchen Wang Yang Zhang Bowen Zhang Bo Wang Jinxi Zhang Long‐Qing Chen Qiming Zhang Zhong Lin Wang Kailiang Ren |
| author_sort | Chenchen Wang |
| collection | DOAJ |
| description | Abstract Flexoelectricity is an electromechanical coupling effect in which electric polarization is generated by a strain gradient. In this investigation, a potassium sodium niobite/poly(vinylidene fluoride‐trifluoroethylene) (KNN/PVDF‐TrFE)‐based nanocomposite is fabricated, and the flexoelectric effect is used to enhance the photovoltaic current (Ipv) in the nanocomposite. It is found that both a pyroelectric current and photovoltaic current can be generated simultaneously in a light illumination process. However, the photovoltaic current (Ipv) in this process contributes ≈85% of the total current. When assessing the effect of flexoelectricity with a curvature of 1/20, the Ipv of the curved KNN/PVDF‐TrFE (20%) (K/P‐20) composite increased by ≈13.9% compared to that of the flat K/P‐20 nanocomposite. Similarly, at a curvature of 1/20, the Ipv of the K/P‐20 nanocomposite is 71.6% higher than that of the PVDF‐TrFE film. However, the photovoltaic effect induced by flexoelectricity is much higher than the increased polarization from flexoelectricity, so this effect is called as the flexophotovoltaic effect. Furthermore, the calculated energy conversion efficiency of the K/P‐20 film is 0.017%, which is comparable to the previous research result. This investigation shows great promise for PVDF‐based nanocomposites in ferroelectric memory device applications. |
| first_indexed | 2024-12-14T22:15:09Z |
| format | Article |
| id | doaj.art-a6669d583b82484199a994819ede311f |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-14T22:15:09Z |
| publishDate | 2021-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-a6669d583b82484199a994819ede311f2022-12-21T22:45:38ZengWileyAdvanced Science2198-38442021-04-0188n/an/a10.1002/advs.202004554Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) NanocompositeChenchen Wang0Yang Zhang1Bowen Zhang2Bo Wang3Jinxi Zhang4Long‐Qing Chen5Qiming Zhang6Zhong Lin Wang7Kailiang Ren8Beijing Key Laboratory of Micro‐nano Energy and Sensor; CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences Beijing 101400 P. R. ChinaInstitute of Semiconductors Chinese Academy of Sciences Beijing 100083 P.R. ChinaBeijing Key Laboratory of Micro‐nano Energy and Sensor; CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences Beijing 101400 P. R. ChinaDepartment of Materials Science and Engineering The Pennsylvania State University University Park PA 16802 USABeijing Key Laboratory of Micro‐nano Energy and Sensor; CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences Beijing 101400 P. R. ChinaDepartment of Materials Science and Engineering The Pennsylvania State University University Park PA 16802 USADepartment of Electrical Engineering and Materials Research Institute Pennsylvania State University University Park PA 16802 USABeijing Key Laboratory of Micro‐nano Energy and Sensor; CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences Beijing 101400 P. R. ChinaBeijing Key Laboratory of Micro‐nano Energy and Sensor; CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences Beijing 101400 P. R. ChinaAbstract Flexoelectricity is an electromechanical coupling effect in which electric polarization is generated by a strain gradient. In this investigation, a potassium sodium niobite/poly(vinylidene fluoride‐trifluoroethylene) (KNN/PVDF‐TrFE)‐based nanocomposite is fabricated, and the flexoelectric effect is used to enhance the photovoltaic current (Ipv) in the nanocomposite. It is found that both a pyroelectric current and photovoltaic current can be generated simultaneously in a light illumination process. However, the photovoltaic current (Ipv) in this process contributes ≈85% of the total current. When assessing the effect of flexoelectricity with a curvature of 1/20, the Ipv of the curved KNN/PVDF‐TrFE (20%) (K/P‐20) composite increased by ≈13.9% compared to that of the flat K/P‐20 nanocomposite. Similarly, at a curvature of 1/20, the Ipv of the K/P‐20 nanocomposite is 71.6% higher than that of the PVDF‐TrFE film. However, the photovoltaic effect induced by flexoelectricity is much higher than the increased polarization from flexoelectricity, so this effect is called as the flexophotovoltaic effect. Furthermore, the calculated energy conversion efficiency of the K/P‐20 film is 0.017%, which is comparable to the previous research result. This investigation shows great promise for PVDF‐based nanocomposites in ferroelectric memory device applications.https://doi.org/10.1002/advs.202004554flexophotovoltaicnanocompositesphotovoltaicpiezoelectricity |
| spellingShingle | Chenchen Wang Yang Zhang Bowen Zhang Bo Wang Jinxi Zhang Long‐Qing Chen Qiming Zhang Zhong Lin Wang Kailiang Ren Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite Advanced Science flexophotovoltaic nanocomposites photovoltaic piezoelectricity |
| title | Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite |
| title_full | Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite |
| title_fullStr | Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite |
| title_full_unstemmed | Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite |
| title_short | Flexophotovoltaic Effect in Potassium Sodium Niobate/Poly(Vinylidene Fluoride‐Trifluoroethylene) Nanocomposite |
| title_sort | flexophotovoltaic effect in potassium sodium niobate poly vinylidene fluoride trifluoroethylene nanocomposite |
| topic | flexophotovoltaic nanocomposites photovoltaic piezoelectricity |
| url | https://doi.org/10.1002/advs.202004554 |
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