Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric Effects
Abstract The photopyroelectric effect in ferroelectrics has shown great potential for application in infrared detection and imaging. One particular subclass is broadband with dielectric bistability, which allows for large pyroelectric figures‐of‐merit (FOMs). Herein, an improper high‐Tc perovskite f...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-07-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202301064 |
| _version_ | 1797786162025201664 |
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| author | Lina Hua Jiaqi Wang Yi Liu Wuqian Guo Yu Ma Haojie Xu Shiguo Han Junhua Luo Zhihua Sun |
| author_facet | Lina Hua Jiaqi Wang Yi Liu Wuqian Guo Yu Ma Haojie Xu Shiguo Han Junhua Luo Zhihua Sun |
| author_sort | Lina Hua |
| collection | DOAJ |
| description | Abstract The photopyroelectric effect in ferroelectrics has shown great potential for application in infrared detection and imaging. One particular subclass is broadband with dielectric bistability, which allows for large pyroelectric figures‐of‐merit (FOMs). Herein, an improper high‐Tc perovskite ferroelectric, (IA)2(EA)2Pb3Cl10 (1, where IA is isoamylammonium and EA is ethylammonium) is presented, in which spontaneous polarization (Ps) stems from the dynamic ordering of organic cations and the tilting of distorted PbCl6 octahedra. Notably, 1 displays unusual dielectric bistability with small variations in the temperature‐dependent dielectric constants near Tc = 392 K; this bistable attribute endows large pyroelectric FOMs with peak voltage efficiency (FV = 1.7×10−2 cm2 µC−1) and sensitivity (FD = 3.9×10−4 Pa−1/2). These FV and FD parameters, beyond those of their proper counterparts, make 1 a promising candidate for infrared photodetection. As expected, the broadband photopyroelectric effects observed in 1 covered the ultraviolet to infrared‐II spectral region (266–1950 nm). Such Ps‐directed photoactivities overcome the optical bandgap limitation and allow for wide‐wave photodetection. As an innovative study on improper ferroelectricity, light is shaded here on the targeted engineering of new electrically ordered candidate materials for smart optoelectronic devices. |
| first_indexed | 2024-03-13T01:05:00Z |
| format | Article |
| id | doaj.art-9018744f2fb44a079db5848a603a38d5 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-13T01:05:00Z |
| publishDate | 2023-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-9018744f2fb44a079db5848a603a38d52023-07-06T07:39:03ZengWileyAdvanced Science2198-38442023-07-011019n/an/a10.1002/advs.202301064Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric EffectsLina Hua0Jiaqi Wang1Yi Liu2Wuqian Guo3Yu Ma4Haojie Xu5Shiguo Han6Junhua Luo7Zhihua Sun8State Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaState Key Laboratory of Structure Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. ChinaAbstract The photopyroelectric effect in ferroelectrics has shown great potential for application in infrared detection and imaging. One particular subclass is broadband with dielectric bistability, which allows for large pyroelectric figures‐of‐merit (FOMs). Herein, an improper high‐Tc perovskite ferroelectric, (IA)2(EA)2Pb3Cl10 (1, where IA is isoamylammonium and EA is ethylammonium) is presented, in which spontaneous polarization (Ps) stems from the dynamic ordering of organic cations and the tilting of distorted PbCl6 octahedra. Notably, 1 displays unusual dielectric bistability with small variations in the temperature‐dependent dielectric constants near Tc = 392 K; this bistable attribute endows large pyroelectric FOMs with peak voltage efficiency (FV = 1.7×10−2 cm2 µC−1) and sensitivity (FD = 3.9×10−4 Pa−1/2). These FV and FD parameters, beyond those of their proper counterparts, make 1 a promising candidate for infrared photodetection. As expected, the broadband photopyroelectric effects observed in 1 covered the ultraviolet to infrared‐II spectral region (266–1950 nm). Such Ps‐directed photoactivities overcome the optical bandgap limitation and allow for wide‐wave photodetection. As an innovative study on improper ferroelectricity, light is shaded here on the targeted engineering of new electrically ordered candidate materials for smart optoelectronic devices.https://doi.org/10.1002/advs.202301064broadband photopyroelectric effectsdielectric bistabilityhybrid perovskitesimproper ferroelectrics |
| spellingShingle | Lina Hua Jiaqi Wang Yi Liu Wuqian Guo Yu Ma Haojie Xu Shiguo Han Junhua Luo Zhihua Sun Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric Effects Advanced Science broadband photopyroelectric effects dielectric bistability hybrid perovskites improper ferroelectrics |
| title | Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric Effects |
| title_full | Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric Effects |
| title_fullStr | Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric Effects |
| title_full_unstemmed | Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric Effects |
| title_short | Improper High‐Tc Perovskite Ferroelectric with Dielectric Bistability Enables Broadband Ultraviolet‐to‐Infrared Photopyroelectric Effects |
| title_sort | improper high tc perovskite ferroelectric with dielectric bistability enables broadband ultraviolet to infrared photopyroelectric effects |
| topic | broadband photopyroelectric effects dielectric bistability hybrid perovskites improper ferroelectrics |
| url | https://doi.org/10.1002/advs.202301064 |
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