热释电陶瓷和薄膜

Pyroelectric ceramics and thin films 

　　非制冷红外探测器是红外热成像技术的重要发展方向，具有广阔应用前景。热释电材料是制作非制冷红外探测器的一类关键敏感材料。  

　　热释电材料（包括陶瓷、单晶和薄膜）根据工作模式可分为两类，一类是本征热释电材料，如TGS单晶、LaTiO₃单晶、PZT陶瓷、PVDF聚合物等；另一类是场致热释电材料，如Ba_1-xSr_xTiO₃ (BST)、PbSc_1/2Ta_1/2O₃ (PST)等。  

　　Uncooled infrared detector is an important development direction of the infrared thermal imaging technology. It has a wide application prospect. Pyroelectric materials are one kind of the key sensitive materials in producing uncooled infrared detectors.  

　　Pyroelectric materials (including ceramics, single crystals and thin films) can be divided into two classes: one is the intrinsic pyroelectrics, such as TGS single crystals, LaTiO₃ single crystals, PZT ceramics and PVDF polymers. The other one is the field-induced pyroelectrics, such as Ba_1-xSr_xTiO₃ (BST) and PbSc_1/2Ta_1/2O₃ (PST) ceramics.  

　　研究内容： 

　　Research Interests:　 

　　（1）材料（PZT、SBN、BST、PST等）性能设计与可控制备；  

　　Properties Design and Preparation Control of PZT, SBN, BST, and PST materials  

　　（2）外场下性能演变规律及热释电响应物理机制；  

　　Material’s Properties Evolving Laws and Pyroelectric Response Mechanisms Under DC Bias Field.  

　　（3）新型热释电材料探索；  

　　Exploring of New Type Pyroelectric Materials.  

　　（4）热释电材料工程应用。  

　　Pyroelectric Materials Applications and Devices. 　　　　 

　　代表性论文: 

　　Representative articles and publications:  

1. Jiahui Jia, Shaobo Guo, Shiguang Yan, Fei Cao, Chunhua Yao, Xianlin Dong, and Genshui Wang*, Simultaneous Large Pyroelectric Response and High Depolarization Temperature in Sodium Bismuth Titanate-based Perovskite, Applied Physics Letters, 2019, 114, 032902. 
2. Zhen Liu, Weijun Ren, Ping Peng, Shaobo Guo, Teng Lu, Yun Liu, Xianlin Dong, Genshui Wang*, High performance Bi_0.5Na_0.5TiO₃-BiAlO₃- K_0.5Na_0.5NbO₃ lead-free pyroelectric ceramics for thermal detectors, Applied Physics Letters, 2018,112,142903. 
3. Han Liuyang, Guo Shaobo, Yan Shiguang, Cao Fei, Guo Weili, Yao Chunhua, Dong Xianlin, Wang Genshui, Enhanced pyroelectric properties of Pb_0.3Ca_0.15Sr0_.55TiO₃ ceramic with first-order dominated phase transition under low bias field, Applied Physics Letters, 2017, 110: 102905. 
4. Chen Hui, Guo Shaobo, Yao Chunhua, Dong Xianlin, Mao Chaoliang, Wang Genshui, Induced anisotropic behavior and enhanced electrical properties on hot-pressed strontium barium niobate ceramics, Ceramics International, 2017, 43, 3610. 
5. Nie Xin, Yan Shiguang, Guo Shaobo, Cao Fei, Yao Chunhua, Mao Chaoliang, Dong Xianlin, Wang Genshui, The influence of phase transition on electrocaloric effect in lead-free (Ba_0.9Ca_0.1)(Ti_1-xZr_x)O₃ ceramics, Journal of the American Ceramic Society,2017, 100, 5202. 
6. Chen Hui, Guo Shaobo, Dong Xianlin, Cao Fei, Mao Chaoliang, Wang Genshui, Ca_xSr_0.3-xBa_0.7Nb₂O₆ lead-free pyroelectric ceramics with high depoling temperature, Journal of Alloys and Compounds , 2017, 695, 2723. 
7. Yan Shiguang, Mao Chaoliang, Wang Genshui, Yao Chunhua, Cao Fei, Dong Xianlin, High temperature dielectric relaxation anomaly of Y³⁺ and Mn²⁺ doped barium strontium titanate ceramics, Journal of Applied Physics, 2014, 116, 114103 
8. Chaoliang Mao, Sheng Cao, Shiguang Yan, Chunhua Yao, Fei Cao, Genshui Wang, Xianlin Dong, Xu Hu, and Chunli Yang, Pyroelectric response mechanism of barium strontium titanate ceramics in dielectric bolometer mode: The underlying essence of the enhancing effect of direct current bias field, Applied Physics Letters, 2013, 102: 242911 
9. Shiguang Yan, Chaoliang Mao, Genshui Wang, Chunhua Yao, Fei Cao, and Xianlin Dong, Temperature and voltage stress dependent dielectric relaxation process of the doped Ba_0.67Sr_0.33TiO₃ ceramics,Applied Physics Letters, 2013, 103, 112908 
10. Jing Zhang, Xianlin Dong, Fei Cao, Shaobo Guo, and Genshui Wang, Enhanced pyroelectric properties of Cax(Sr_0.5Ba_0.5)_1-xNb₂O₆ lead-free ceramics, Applied Physics Letters, 2013, 102, 102908