Enhancing growth of high-quality two-dimensional CsPbBr3 flakes on sapphire substrate by direct chemical vapor deposition method

IF 5.9 3区材料科学 Q2 CHEMISTRY, PHYSICAL FlatChem Pub Date : 2023-12-16 DOI:10.1016/j.flatc.2023.100598

Nasrullah Wazir , Yuan Li , Roh Ullah , Tariq Aziz , Muhammad Arif , Ruibin Liu , Yufeng Hao

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Abstract

Two-dimensional (2D) cesium lead halide (CsPbBr₃) nanoflakes have attracted significant attention due to their exceptional optoelectronic properties. Herein, the direct chemical vapor deposition (CVD) method was employed to synthesize high-quality single-crystalline 2D CsPbBr₃ flakes on a sapphire substrate using PbBr₂ and CsBr precursors. The study offers a comprehensive analysis of the reaction mechanisms involved, including precursor vaporization, transport, decomposition, and subsequent reactions. These factors play a crucial role in modifying the growth process and achieving the desired properties of CsPbBr₃ flakes on the sapphire substrate. Additionally, a detailed investigation was conducted into the position-dependent and power-dependent photoluminescence (PL) properties of CsPbBr₃ flakes on sapphire substrates. The results of this study contribute to the expanding knowledge base regarding the growth of 2D perovskite materials. Moreover, they open up avenues for future research and development in the field of advanced optoelectronics.

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利用直接化学气相沉积法在蓝宝石衬底上提高高质量二维硒硼合金片的生长速度

二维（2D）卤化铯铅（CsPbBr3）纳米薄片因其卓越的光电特性而备受关注。本文采用直接化学气相沉积（CVD）方法，使用 PbBr2 和 CsBr 前驱体在蓝宝石衬底上合成了高质量的单晶二维 CsPbBr3 薄片。该研究全面分析了所涉及的反应机制，包括前驱体的汽化、传输、分解和后续反应。这些因素在改变蓝宝石衬底上 CsPbBr3 薄片的生长过程和实现理想特性方面起着至关重要的作用。此外，还对蓝宝石衬底上 CsPbBr3 薄片的位置依赖性和功率依赖性光致发光（PL）特性进行了详细研究。这项研究的结果有助于扩大有关二维包晶材料生长的知识库。此外，它们还为未来先进光电子学领域的研究和开发开辟了道路。

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来源期刊

FlatChem Multiple-

CiteScore

8.40

自引率

6.50%

发文量

104

审稿时长

26 days

期刊介绍： FlatChem - Chemistry of Flat Materials, a new voice in the community, publishes original and significant, cutting-edge research related to the chemistry of graphene and related 2D & layered materials. The overall aim of the journal is to combine the chemistry and applications of these materials, where the submission of communications, full papers, and concepts should contain chemistry in a materials context, which can be both experimental and/or theoretical. In addition to original research articles, FlatChem also offers reviews, minireviews, highlights and perspectives on the future of this research area with the scientific leaders in fields related to Flat Materials. Topics of interest include, but are not limited to, the following: -Design, synthesis, applications and investigation of graphene, graphene related materials and other 2D & layered materials (for example Silicene, Germanene, Phosphorene, MXenes, Boron nitride, Transition metal dichalcogenides) -Characterization of these materials using all forms of spectroscopy and microscopy techniques -Chemical modification or functionalization and dispersion of these materials, as well as interactions with other materials -Exploring the surface chemistry of these materials for applications in: Sensors or detectors in electrochemical/Lab on a Chip devices, Composite materials, Membranes, Environment technology, Catalysis for energy storage and conversion (for example fuel cells, supercapacitors, batteries, hydrogen storage), Biomedical technology (drug delivery, biosensing, bioimaging)