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Solution Growth and Performance Study of Cs2AgBiBr6 Single Crystal
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2020-02-13 , DOI: 10.1002/crat.201900222 Jing Su 1, 2 , Yi-qiang Huang 1 , Han Chen 1 , Jing Huang 1
Crystal Research and Technology ( IF 1.5 ) Pub Date : 2020-02-13 , DOI: 10.1002/crat.201900222 Jing Su 1, 2 , Yi-qiang Huang 1 , Han Chen 1 , Jing Huang 1
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Cs2AgBiBr6 high purity polycrystalline powders are synthesized by solution method. The millimeter‐sized Cs2AgBiBr6 crystals are obtained by cooling method with hydrobromic acid as solvent. Powder X‐Ray diffraction (XRD) analysis shows that the crystal is of cubic structure and its lattice constant is a=b=c=11.2562 Å. Optical absorption property is tested by ultraviolet‐visible (UV‐Vis) spectrophotometer. The results show that the absorption edge of the Cs2AgBiBr6 crystal is at about 593 nm and the band gap value is 2.12 eV. In addition, the thermogravimetric analysis/differential thermal analysis (TG/DTA) curves of Cs2AgBiBr6 crystal at 20–800 °C are measured. The thermal decomposition mechanism of Cs2AgBiBr6 crystal is analyzed. The results show that Cs2AgBiBr6 crystal with high quality can be prepared by solution method, and it has potential application advantages in the field of photoelectric devices.
中文翻译：
Cs2AgBiBr6单晶的溶液生长及性能研究
通过溶液法合成了Cs 2 AgBiBr 6高纯多晶粉末。通过以氢溴酸为溶剂的冷却方法，获得了毫米级的Cs 2 AgBiBr 6晶体。粉末X射线衍射（XRD）分析表明该晶体为立方结构，其晶格常数为a = b = c = 11.2562Å。光学吸收性能通过紫外可见（UV-Vis）分光光度计进行测试。结果表明，Cs 2 AgBiBr 6的吸收边缘晶体在约593 nm处，带隙值为2.12 eV。另外，测量了Cs 2 AgBiBr 6晶体在20–800°C时的热重分析/差热分析（TG / DTA）曲线。分析了Cs 2 AgBiBr 6晶体的热分解机理。结果表明，可以通过溶液法制备高质量的Cs2AgBiBr6晶体，在光电器件领域具有潜在的应用优势。
更新日期：2020-03-12
中文翻译：
Cs2AgBiBr6单晶的溶液生长及性能研究
通过溶液法合成了Cs 2 AgBiBr 6高纯多晶粉末。通过以氢溴酸为溶剂的冷却方法，获得了毫米级的Cs 2 AgBiBr 6晶体。粉末X射线衍射（XRD）分析表明该晶体为立方结构，其晶格常数为a = b = c = 11.2562Å。光学吸收性能通过紫外可见（UV-Vis）分光光度计进行测试。结果表明，Cs 2 AgBiBr 6的吸收边缘晶体在约593 nm处，带隙值为2.12 eV。另外，测量了Cs 2 AgBiBr 6晶体在20–800°C时的热重分析/差热分析（TG / DTA）曲线。分析了Cs 2 AgBiBr 6晶体的热分解机理。结果表明，可以通过溶液法制备高质量的Cs2AgBiBr6晶体，在光电器件领域具有潜在的应用优势。
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