Bending for Better: Flexible Organic Single Crystals with Controllable Curvature and Curvature-Related Conductivity for Customized Electronic Devices
Bending for Better: Flexible Organic Single Crystals with Controllable Curvature and Curvature-Related Conductivity for Customized Electronic Devices
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DOI：
10.1002/anie.202108441
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发表时间：
2021-09-02
影响因子：
16.6
通讯作者：
Gong, Junbo
中科院分区：
文献类型：
--
作者：
Chen, Yifu;Chang, Zewei;Gong, Junbo
自弯曲晕苯晶体的电子微型器件的开发揭示了机械变形和晶体功能之间未经探索的联系。首先，提出了一种通过自下而上溶液结晶获得长度/宽度/曲率可控微晶的简便方法，以实现高加工性和稳定性。弯曲晶体器件的电导率比直晶体器件的电导率显着提高了七个数量级，这提供了晶体材料中形变诱导功能增强的第一个例子。此外，X射线光电光谱和X射线晶体学分别确定了弯曲引起的双重效应，包括π电子能级的变化以及载流子迁移率的增强共存，有助于电导率的提高。我们的研究结果将促进未来创建具有变形增强功能特征的柔性有机晶体系统，用于定制智能设备。
Electronic microdevices of self-bending coronene crystals are developed to reveal an unexplored link between mechanical deformation and crystal function. First, a facile approach towards length/width/curvature-controllable micro-crystals through bottom-up solution crystallization was proposed for high processability and stability. The bending crystal devices show a significant increase beyond seven orders of magnitude in conductivity than the straight ones, providing the first example of deformation-induced function enhancement in crystal materials. Besides, double effects caused by bending, including the change of pi electron level as well as the enhancement of carrier mobility, were determined, respectively by the X-ray photoelectric spectroscopy and X-ray crystallography to coexist, contributing to the conductivity improvement. Our findings will promote future creation of flexible organic crystal systems with deformation-enhanced functional features towards customized smart devices.