多晶钙钛矿材料的制备及其性能表征  

Preparation and characterization of polycrystalline perovskite materials

作　　者：于吉 罗寅先 田宁[1] 谭雯竹 郑若宁 王诚源 屈燕梅 黄永涛 YU Ji;LUO Yinxian;TIAN Ning;TAN Wenzhu;ZHENG Ruoning;WANG Chengyuan;QU Yanmei;HUANG Yongtao(College of Physics Science and Technology,Shenyang Normal University,Shenyang 110034,China)

机构地区：[1]沈阳师范大学物理科学与技术学院,沈阳110034

出　　处：《沈阳师范大学学报（自然科学版）》2024年第2期180-185,共6页Journal of Shenyang Normal University:Natural Science Edition

基　　金：辽宁省教育厅高校基本科研项目(LJKMZ20221470).

摘　　要：金属卤化物钙钛矿由于具有较多的优点而有望成为下一代直接X射线探测器的候选材料。目前报道的钙钛矿基射线探测器大多以单晶材料为主,单晶材料往往生长条件严苛、生长过程不可控,并且制备大面积高质量钙钛矿单晶材料仍面临巨大挑战。多晶钙钛矿材料制备工艺简单、周期短,且被广泛应用于光电领域。但在宏观尺度上制备大面积高质量的钙钛矿多晶材料也面临着诸多问题。在此,分别通过机械热压制和浆料刮涂的方法制备尺寸可控的(CH_(3)NH_(3))3Bi_(2)I_(9)多晶片和CH_(3)NH_(3)PbI_(3)多晶厚膜,分别对它们的微观形貌、晶体结构和电学性质等进行了表征。结果表明,通过热压法和浆料刮涂法制备的(CH_(3)NH_(3))3Bi_(2)I_(9)多晶片和CH_(3)NH_(3)PbI_(3)多晶厚膜具有较高的晶体质量、致密性和较好的电学性质。Lead-free perovskite has been proved to be an excellent candidate material for the next generation of bio-friendly direct X-ray detectors due to its many advantages.At present,most of the reported perovskite-based ray detectors are mainly single crystal materials.Single crystal materials often have harsh growth conditions and uncontrollable growth processes,and the preparation of large-area high-quality perovskite single crystal materials still faces great challenges.Polycrystalline perovskite materials with simple preparation processes and short cycles are also widely used in the field of optoelectronics.However,the preparation of large-area high-quality perovskite polycrystalline materials on a macro scale still faces great challenges.Here,(CH_(3)NH_(3))_(3)Bi_(2)I_(9) polycrystalline wafers and CH_(3)NH_(3)PbI_(3) polycrystalline thick films with controllable size were prepared by mechanical hot pressing and slurry coating,respectively.Their microstructure,crystal structure and electrical properties were characterized.The results show that the(CH_(3)NH_(3))_(3)Bi_(2)I_(9) polycrystalline wafer and CH_(3)NH_(3)PbI_(3) polycrystalline thick film prepared by hot pressing method and slurry coating method have high crystal quality,compactness and good electrical properties.

关 键 词：金属卤化物钙钛矿 X射线探测器 多晶片 多晶厚膜 

分 类 号：TN36[电子电信—物理电子学]