Synthesis of large-area ultrathin graphdiyne films at an air–water interface and their application in memristors

Abstract

A simple approach was developed to fabricate large-area homogeneous GDY films at an air/water interface; the obtained GDY films exhibit steady nonvolatile resistance switching behavior with excellent data retention capability and high on/off ratio.

Synthesis of Wafer-Scale Monolayer Pyrenyl Graphdiyne on Ultrathin Hexagonal Boron Nitride for Multibit Optoelectronic Memory

“…The major obstacle for further development lies in the fact that GDY films prepared via existing methods hardly satisfy the requirements of device applications. In recent years, many efforts have been made to prepare large-area and high-quality GDY and GDY analog films. − For example, an interface-confined synthetic strategy was developed to synthesize GDY , and N-GDY films at the liquid/liquid or gas/liquid interfaces, and a solution-phase van der Waals epitaxial synthetic strategy was proposed to obtain highly crystalline and ultrathin GDY , and β-GDY films on graphene. However, GDY films prepared via these methods are either very thick or difficult to exfoliate, which limits their further applications in optoelectronics.…”

The future of solution processing toward organic semiconductor devices: a substrate and integration perspective

“…28a–c. 160 The uniformity and continuity of the GDY films are displayed in Fig. 28d and f, respectively.…”

Synthesis of wafer-scale ultrathin graphdiyne for flexible optoelectronic memory with over 256 storage levels

“…In the past decade, tremendous efforts have been devoted to improve the scale and quality of the prepared GDY film since GDY was first prepared by Li et al in 2010. [17][18][19][20][21][22] For example, space-confined strategies assisted by interfaces were proposed to synthesize GDY thin film, 18,19,22 and van der Waals epitaxial strategies were developed to synthesize few-layered crystalline GDY on graphene (Gr). 20,21 However, the GDY films synthesized by these methods cannot simultaneously possess the characteristics of large area, ultrathin, and high crystallinity; either they have the characteristics of large area but exhibit very large thickness, or they are ultrathin but have small domain size, or it is difficult to exfoliate them from template, which inevitably hinders their further application in devices.…”

“…20,21 However, the GDY films synthesized by these methods cannot simultaneously possess the characteristics of large area, ultrathin, and high crystallinity; either they have the characteristics of large area but exhibit very large thickness, or they are ultrathin but have small domain size, or it is difficult to exfoliate them from template, which inevitably hinders their further application in devices. 19 Therefore, it is highly desirable to develop a reliable strategy that can synthesize large-area and high-quality GDY film with controllable thickness.…”