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Your search keyword '"Guo, Chucai"' showing total 29 results
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29 results on '"Guo, Chucai"'

3. Smart Window with Reversible and Instantaneous Photoluminescence based on Microsphere Structure

Author

Chen, Dan, Chen, Yuang, Zhu, Zhihong, Luo, Fang, Wu, Fan, Zhou, Qingwei, and Guo, Chucai

Abstract

A smart window that dynamically regulates light transmittance is crucial for modern life end-users and promising for on-demand optical devices. The advent of three-dimensional (3D) photonic crystal microspheres has enriched the functions of a smart window. However, the smart window formed by polymer microspheres encounters poor mechanical strength and microstructural defects. Herein, to solve this limitation, we report the microsphere-based smart window composed of tightly packed cross-linked polymer microspheres (as a precursor) containing organic photochromic dyes, followed by compression under a high elastic state. When excited under an ultraviolet supply, our smart window showed a rapid and reversible fluorescent photoluminescence without fatigue (50 cycles). Moreover, the bulk devices with a microsphere cross-linked network structure enable excellent mechanical strength (hardness reached 0.158 GPa) and visible-light transparency. Interestingly, a QR code can be recognized under visible light exposure but not under ultraviolet light exposure because of photoluminescence of the smart window. Our method generally provided a paradigm for various amorphous polymers, which can be regarded as a simple and effective approach to build a versatile strategy to introduce an ideal marketplace with economic and community benefits.

Published
2024
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21. 基于拉曼光谱法的电偏置悬空石墨烯器件热导率研究

Author

崔子孺 Cui Ziru, 周思宇 Zhou Siyu, 肖暘 Xiao Yang, 张宇辰 Zhang Yucheng, 郭楚才 Guo Chucai, 刘肯 Liu Ken, 罗芳 Luo Fang, and 朱梦剑 Zhu Mengjian

Subjects
Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials
Published
2023

29. High-Performance Photodetectors Based on MoTe 2 -MoS 2 van der Waals Heterostructures.

Author

Ji X, Bai Z, Luo F, Zhu M, Guo C, Zhu Z, and Qin S

Abstract

Two-dimensional (2D) materials have got extensive attention for multifunctional device applications in advanced nanoelectronics and optoelectronics, such as field-effect transistors, photodiodes, and solar cells. In our work, we fabricated MoTe 2 -MoS 2 van der Waals heterostructure photodetectors with great performance using the mechanical exfoliation method and restack technique. It is demonstrated that our MoTe 2 -MoS 2 heterostructure photodetector device can operate without bias voltage, possessing a low dark current (10 pA) and high photocurrent on/off ratio (>10 4 ). Importantly, the room temperature photoresponsivity of the MoTe 2 -MoS 2 photodetector can reach 110.6 and 9.2 mA W -1 under λ = 532 and 1064 nm incident laser powers, respectively. Our results indicate that the van der Waals heterostructure based on 2D semiconducting materials is expected to play an important role in nanoscale optoelectronic applications., Competing Interests: The authors declare no competing financial interest., (© 2022 The Authors. Published by American Chemical Society.)

Published
2022
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