材料科学
异质结
化学气相沉积
纳米技术
钙钛矿(结构)
碳纳米管
纳米线
纳米结构
范德瓦尔斯力
外延
纳米管
原子层沉积
沉积(地质)
图层(电子)
光电子学
化学工程
化学
有机化学
分子
工程类
古生物学
沉积物
生物
作者
Mengjia Zhu,Kailun Xia,Haomin Wang,Shuo Li,Mingchao Zhang,Haomin Wang,Xiaoping Liang,Ke Chen,Yingying Zhang
出处
期刊:Small
[Wiley]
日期:2024-06-23
标识
DOI:10.1002/smll.202401681
摘要
Abstract Perovskite is an emerging material with immense potential in the field of optoelectronics. 1D perovskite nanowires are crucial building blocks for the development of optoelectronic devices. However, producing perovskite nanowires with high quality and controlled alignment is challenging. In this study, the direct epitaxial growth of perovskite on oriented carbon nanotube (CNT) templates is presented through a chemical vapor deposition method. The deposition process of lead iodide and methylammonium iodide is systematically investigated, and a layer plus island growth mechanism is proposed to interpret the experimental observations. The aligned long CNTs serve as 1D templates and allow the growth of CNT@perovskite core‐shell heterostructure with a high aspect ratio to withstand large deformation. The obtained 1D perovskite materials can be easily manipulated and transferred, enabling the facile preparation of microscale flexible devices. For proof of concept, a photodetector based on an individual CNT@methylammonium lead iodide heterostructure is fabricated. This work provides a new approach to prepare 1D hetero‐nanostructure and may inspire the design of novel flexible nanophotodetectors.
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