Ubiquitous energy conversion of two-dimensional molecular crystals. (12th February 2019)

• Record Type: Journal Article
• Authors: Xu, Beibei; Hu, Yong; Guan, Ying-Shi; Zhang, Zhuolei; Ren, Shenqiang
• Is Part Of: Nanotechnology. Volume 30:Number 15(2019)
• Publication Date: 2019-02-12
• Subjects: energy conversion -- charge transfer -- self-assembly; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ab02be
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Two-dimensional (2D) atomic crystals have triggered significant excitement due to their rich physics as well as potential industrial applications. The possibility of a molecular counterpart with scalable processability and superior performance is intriguing from both fundamental and applied perspectives. Here, we present the freestanding 2D molecular charge-transfer bis(ethylenedithio)tetrathiafulvalene-C60 crystals prepared by a modified Langmuir–Blodgett method, with precisely controlled few-layer thickness and centimeter-scale lateral dimension. The interconversion of intrinsic excited process, the long-range ordering and anisotropic stacking arrangement of the molecular layered crystals generate external stimuli responsive behaviors and anisotropic spin-charge conversion with magnetic energy conversion ability, as well as a superior UV photosensitivity. Moreover, the 2D freestanding crystals demonstrate superior magneto-electrical properties. These results suggest that a new class of 2D atomically thin molecular crystals with novel electronic, optical and magnetic properties have great potential for spintronic, energy and sensor applications.