A General “Gas-Liquid” Synthesis Strategy Towards Centimeter-Scale Two-Dimensional Non-Layered Semiconductors

Abstract

Two-dimensional (2D) non-layered semiconductors have attracted tremendous research interest due to the exotic structural and electronic properties compared with their layered counterparts. However, the lack of large-scale growth method greatly hinders their application. In this work, we have proposed a gas-liquid heterogeneous reaction strategy to suppress the diffusion of the involved reactants, resulting in the anisotropic growth of centimeter-scale 2D non-layered CdS film at the gas-liquid interface. The thickness of the 2D film can be effectively modulated in the range from 10 to 50 nm by adjusting the viscosity of the liquid solvent. The photodetector designed on CdS film exhibits a high photoswitching (Ilight/Idark) ratio (up to 2×103), high specific detectivity (~1011 Jones) and excellent stability. Moreover, centimeter-scale 2D ZnS, TiO2, SnO2 and even layered MoS2 films were also obtained by designing corresponding reaction system, illustrating apparent universality of the “gas-liquid” strategy. Our results pave a novel avenue for the growth of wafer-scale 2D materials, espe-cially the non-layered ones, which will foster their potential applications in the integrated optoelectronics.

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Article information

Article type
Edge Article
Submitted
04 Mar 2025
Accepted
01 Jun 2025
First published
02 Jun 2025
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2025, Accepted Manuscript

A General “Gas-Liquid” Synthesis Strategy Towards Centimeter-Scale Two-Dimensional Non-Layered Semiconductors

J. Liu, J. Yuan, H. Liu, Z. Yuan, B. Guo, S. Li, Q. Cui, Q. Xu and C. Wei, Chem. Sci., 2025, Accepted Manuscript , DOI: 10.1039/D5SC01700A

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