Alexander Frebel, Songhak Yoon, Samuel Meles Neguse, Dennis Michael Jöckel, Marc Widenmeyer, Stefan G. Ebbinghaus, Benjamin Balke-Grünewald, Anke Weidenkaff
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引用次数: 0
摘要
通过对前驱体溶液进行铋和银替代,合成了形态可控的 Cs2SbBr6 晶体。X 射线衍射(XRD)和拉曼光谱证实了晶格倾斜和对称性的变化,Bi 取代后主要出现了高折射率刻面。银的替代不会引起 Cs2BBr6(B = Sb 或 Bi)相晶体对称性的变化,但会导致高度缺陷结构,阻碍晶体生长过程中光滑表面的形成。能量色散 X 射线光谱(EDX)也证实了 Cs2SbBr6 中 Bi 的成功替代和 Ag 的有限替代。这项研究为如何控制具有结构缺陷和多相形成的 Cs2SbBr6 晶体的形态提供了设计原则和实际范例。
Morphologically and Compositionally Controlled Cs2SbBr6 by Bi and Ag Substitution
Morphology-controlled Cs2SbBr6 crystals are synthesized by Bi- and Ag-substitution of the precursor solution. X-ray diffraction (XRD) together with Raman spectroscopy confirms the lattice tilting and symmetry changes with the dominant appearance of higher index facets by Bi substitution. Ag substitution does not induce crystal symmetry changes in the Cs2BBr6 (B = Sb or Bi) phase, but results in highly defective structures hindering the formation of a smooth surface during the crystal growth. Successful substitution of Bi and limited substitution of Ag into Cs2SbBr6 is also confirmed by energy dispersive X-ray spectroscopy (EDX). This research provides design principles and practical examples of how to control the morphology of Cs2SbBr6 crystals with structural defects and multiphase formation.
期刊介绍:
The journal Crystal Research and Technology is a pure online Journal (since 2012).
Crystal Research and Technology is an international journal examining all aspects of research within experimental, industrial, and theoretical crystallography. The journal covers the relevant aspects of
-crystal growth techniques and phenomena (including bulk growth, thin films)
-modern crystalline materials (e.g. smart materials, nanocrystals, quasicrystals, liquid crystals)
-industrial crystallisation
-application of crystals in materials science, electronics, data storage, and optics
-experimental, simulation and theoretical studies of the structural properties of crystals
-crystallographic computing