Thermal, Physical, and Optical Properties of the Solution and Melt Synthesized Single Crystal CsPbBr3 Halide Perovskite
Thermal, Physical, and Optical Properties of the Solution and Melt Synthesized Single Crystal CsPbBr3 Halide Perovskite
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DOI：
10.3390/chemosensors10090369
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发表时间：
2022-09
期刊：
影响因子：
4.2
通讯作者：
Kirti Agrawal;S. M. Hasan;J. Blawat;Nishir Mehta;Yuming Wang;R. Cueto;M. Siebenbuerger;O. Kizilkaya-O
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文献类型：
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作者：
Kirti Agrawal;S. M. Hasan;J. Blawat;Nishir Mehta;Yuming Wang;R. Cueto;M. Siebenbuerger;O. Kizilkaya-O
无机卤化铅钙钛矿、溴化铯铅（CsPbBr3）显示出出色的光电性能。已经提出了基于溶液和熔融的方法来生长 CsPbBr3 晶体。基于溶液的生长是在低温下进行的，而基于熔体的生长是在高温下进行的。然而，使用这两种不同生长条件的光学、物理和缺陷状态的比较却很少被研究。在这里，我们比较了溶液生长和熔融生长 CsPbBr3 单晶的热性能和光学性能。正电子湮灭寿命谱（PALS）分析表明，熔融生长晶体比化学合成方法的缺陷数量相对较少。此外，使用化学方法生长的晶体比熔融生长的 CsPbBr3 具有更高的荧光寿命。
Inorganic lead-halide perovskite, cesium lead bromide (CsPbBr3), shows outstanding optoelectronic properties. Both solution- and melt-based methods have been proposed for CsPbBr3 crystal growth. The solution-based growth was done at low-temperature, whereas the melt-based growth was done at high-temperature. However, the comparison of optical, physical, and defect states using these two different growth conditions has been scarcely studied. Here, we have compared the thermal and optical properties of solution-grown and melt-grown single crystals of CsPbBr3. Positron Annihilation Lifetime Spectroscopy (PALS) analysis showed that melt-grown crystal has a relatively smaller number of defects than the chemical synthesis method. In addition, crystals grown using the chemical method showed a higher fluorescence lifetime than melt-grown CsPbBr3.