Monolayer Organic Crystals for Ultrahigh Performance Molecular Diodes

Yating Li; Jiacheng Xie; Li Sun; Junpeng Zeng; Liqi Zhou; Ziqian Hao; Lijia Pan; Jiandong Ye; Peng Wang; Yun Li; Jian‐Bin Xu; Yi Shi; Xinran Wang; Daowei He

doi:10.1002/advs.202305100

Advanced Science (Mar 2024)

Monolayer Organic Crystals for Ultrahigh Performance Molecular Diodes

Yating Li,
Jiacheng Xie,
Li Sun,
Junpeng Zeng,
Liqi Zhou,
Ziqian Hao,
Lijia Pan,
Jiandong Ye,
Peng Wang,
Yun Li,
Jian‐Bin Xu,
Yi Shi,
Xinran Wang,
Daowei He

Affiliations

Yating Li: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Jiacheng Xie: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Li Sun: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Junpeng Zeng: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Liqi Zhou: National Laboratory of Solid‐State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210023 China
Ziqian Hao: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Lijia Pan: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Jiandong Ye: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Peng Wang: Department of Physics University of Warwick Coventry CV4 7AL United Kingdom
Yun Li: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Jian‐Bin Xu: Department of Electronic Engineering and Materials Science and Technology Research Center The Chinese University of Hong Kong Hong Kong 999077 China
Yi Shi: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Xinran Wang: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China
Daowei He: National Laboratory of Solid‐State Microstructures School of Electronic Science and Engineering Key Lab of Optoelectronic Devices and Systems with Extreme Performances and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 China

DOI: https://doi.org/10.1002/advs.202305100
Journal volume & issue: Vol. 11, no. 10
pp. n/a – n/a

Abstract

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Abstract Molecular diodes are of considerable interest for the increasing technical demands of device miniaturization. However, the molecular diode performance remains contact‐limited, which represents a major challenge for the advancement of rectification ratio and conductance. Here, it is demonstrated that high‐quality ultrathin organic semiconductors can be grown on several classes of metal substrates via solution‐shearing epitaxy, with a well‐controlled number of layers and monolayer single crystal over 1 mm. The crystals are atomically smooth and pinhole‐free, providing a native interface for high‐performance monolayer molecular diodes. As a result, the monolayer molecular diodes show record‐high rectification ratio up to 5 × 108, ideality factor close to unity, aggressive unit conductance over 103 S cm−2, ultrahigh breakdown electric field, excellent electrical stability, and well‐defined contact interface. Large‐area monolayer molecular diode arrays with 100% yield and excellent uniformity in the diode metrics are further fabricated. These results suggest that monolayer molecular crystals have great potential to build reliable, high‐performance molecular diodes and deeply understand their intrinsic electronic behavior.

Published in Advanced Science

ISSN: 2198-3844 (Online)
Publisher: Wiley
Country of publisher: Germany
LCC subjects: Science
Website: https://onlinelibrary.wiley.com/journal/21983844

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