无机材料学报 ›› 2018, Vol. 33 ›› Issue (11): 1253-1258.DOI: 10.15541/jim20180234 CSTR: 32189.14.10.15541/jim20180234

所属专题: 钙钛矿材料

• • 上一篇    

移动区熔法生长全无机钙钛矿型CsPbBr3晶体及其性能研究

徐家跃1, 梁肖肖1, 金敏2, 曾海波1,3, KIMURAHideo4, 胡皓阳2, 邵和助2, 申慧1, 田甜1, 李海霞1   

  1. (1. 上海应用技术大学 材料科学与工程学院, 晶体生长研究所, 上海 201418; 2. 上海电机学院 材料学院, 上海 201306; 3. 南京理工大学 材料科学与工程学院, 纳米光电材料研究所, 南京 210094; 4. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan)
  • 收稿日期:2018-05-21 出版日期:2018-11-16 网络出版日期:2018-10-20
  • 作者简介:徐家跃. E-mail: xujiayue@sit.edu.cn

Growth and Characterization of All-inorganic Perovskite CsPbBr3 Crystal by a Traveling Zone Melting Method

XU Jia-Yue1, LIANG Xiao-Xiao1, JIN Min2, ZENG Hai-Bo1,3, KIMURA Hideo4, HU Hao-Yang2, SHAO He-Zhu2, SHEN Hui1, TIAN Tian1, LI Hai-Xia1   

  1. (1. Institute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China; 2. 
    College of Materials, Shanghai Dianji University, Shanghai 201306, China; 3. Institute of Optoelectronics and Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China; 4. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan)
     
  • Received:2018-05-21 Published:2018-11-16 Online:2018-10-20
  • About author:XU Jia-Yue (1966-), professor. E-mail: xujiayue@sit.edu.cn
  • Supported by:
    Foundation item: National Natural Science Foundation of China (51472263, 51572175, 61605116);Ningbo Natural Science Foundation (2017A610009);Public Projects of Zhejiang Province (2017C31006);Shanghai Natural Science Foundation (15ZR1440600)

摘要:

利用自制移动区熔炉生长了CsPbBr3晶体, 事先采用相同工艺合成了高纯多晶原料以去除杂质和水分。通过工艺优化获得了大尺寸CsPbBr3晶体, 达到ϕ25 mm× 60 mm。该晶体呈橘红色, 在600~2000 nm波长范围内具有透过率达78.6%的优异透光性能。热分析表明, 所得CsPbBr3晶体在88.1℃和131.25℃时存在正交-四方和四方-立方相变。计算得到CsPbBr3晶体的带宽Eg= 2.25 eV。上述结果表明移动区熔法是一种具有应用潜力的制备高质量大尺寸CsPbBr3晶体的生长方法。

 

关键词: 移动区熔法, CsPbBr3晶体, 透过率, 带隙

Abstract:

A self-designed traveling zone melting method was employed to fabricate perovskite CsPbBr3 crystals, which is helpful for impurities removing and moisture excluding. A large-size CsPbBr3 crystal with a dimension of ϕ 25 mm× 60 mm is successfully obtained. The as-grown crystal shows orange color and displays an excellent transmittance of 78.6% in the range of 600 nm - 2000 nm wavelength. It is revealed by DSC analysis that there is phase transition at 88.1℃ and 131.25℃, respectively. The band gap Eg of the crystal is calculated to be 2.25 eV. The above results prove that the traveling zone melting method is indeed a potential approach for large size and high quality CsPbBr3 crystal preparation.

Key words: traveling zone melting method, CsPbBr3 crystal, transmittance, band gap

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