化在剥落的六角化片上的化的同质
Johannes Binder1, Aleksandra Krystyna Dabrowska1, Mateusz Tokarczyk1
1Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland.
Nano letters
|May 31, 2024
概括
在hBN基板上实现了六角化 (hBN) 的同位素生长. BN 颗粒的堆叠顺序由基板边缘方向控制,使可调节层堆叠成为新的电子特性.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术纳米技术
背景情况:
- 六角化 (hBN) 的异质增长受到非本土基质的限制.
- 在hBN上种植hBN的homoepitaxy提供了一种改善晶体质量的解决方案.
- 在先进的电子应用中,控制hBN中的层叠是至关重要的.
研究的目的:
- 为了证明三角形化 (BN) 颗粒在脱皮的hBN.上同质皮生长.
- 为了研究基质边缘晶体学对BN层堆叠的影响.
- 为了探索可调节层堆叠在同位素的BN中的途径.
主要方法:
- 金属有机蒸汽阶段乙氧 (MOVPE) 用于BN生长.
- 原子力显微镜 (AFM) 用于表面形态分析.
- 光发光 (PL) 光谱用于结构和电子表征.
主要成果:
- 在脱皮的hBN片上,三角形的BN岛屿的成功同位素生长.
- 在成长的BN岛屿上观察到与标准AA'堆叠的偏差.
- 证明扶手椅边缘促进中心对称堆叠,而齐克扎克边缘导致非中心对称的多型.
结论:
- HBN基底边缘的晶体学方向决定了同位素生长的BN的堆叠顺序.
- 通过控制基板边缘方向,在BN中实现了可调节层堆叠.
- 开辟了合成压电和铁电BN材料的途径.
关键词:
在此之前,BN BN BN伯纳尔·贝尔纳尔 (Bernal Bernal) 是一个MOVPEPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE MOVPE一个同类的epitaxy.多种类型的聚类型.方形面体是指一个方形面体 (rhombohedral).相关概念视频
Hydroboration-Oxidation of Alkenes
8.1K
In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
8.1K
Hybridization of Atomic Orbitals I
47.0K
The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...
47.0K


