Controlled Sculpture of Black Phosphorus Nanoribbons

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• 作者：Paul Masih Das ; Gopinath Danda ; Andrew Cupo ; William M. Parkin ; Liangbo Liang ; Neerav Kharche ; Xi Ling ; Shengxi Huang ; Mildred S. Dresselhaus ; Vincent Meunier ; Marija Drndić
• 刊名：ACS Nano
• 出版年：2016
• 出版时间：June 28, 2016
• 年：2016
• 卷：10
• 期：6
• 页码：5687-5695
• 全文大小：647K
• 年卷期：0
• ISSN：1936-086X

文摘

Black phosphorus (BP) is a highly anisotropic allotrope of phosphorus with great promise for fast functional electronics and optoelectronics. We demonstrate the controlled structural modification of few-layer BP along arbitrary crystal directions with sub-nanometer precision for the formation of few-nanometer-wide armchair and zigzag BP nanoribbons. Nanoribbons are fabricated, along with nanopores and nanogaps, using a combination of mechanical–liquid exfoliation and in situ transmission electron microscopy (TEM) and scanning TEM nanosculpting. We predict that the few-nanometer-wide BP nanoribbons realized experimentally possess clear one-dimensional quantum confinement, even when the systems are made up of a few layers. The demonstration of this procedure is key for the development of BP-based electronics, optoelectronics, thermoelectrics, and other applications in reduced dimensions.