DataVXAdvanced MaterialsPaper
journal article·2023-11Open access

Pseudomorphic Synthesis of Monodisperse Afterglow Carbon Dot‐Doped SiO2 Microparticles for Photonic Crystals

Xue Chen, Yu Wang, Chenxi Peng, Wenbo Hu, Zhongbin Wu, Weidong Xu, Suli Wu, Zhi Luo, Yung Doug Suh, Timur Sh. Atabaev, Xiyan Li, Xiaowang Liu, Wei Huang

Advanced Materials· Volume 35· Issue 48
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Abstract

Abstract Synthesizing monodisperse afterglow microparticles (MPs) is crucial for creating photonic crystal (PC) platforms with multiple optical states for optoelectronics. However, achieving high uniformity in both size and morphology is challenging for inorganic afterglow MPs using conventional methods. In this contribution, a novel approach for the synthesis of carbon dot (CD)‐doped SiO2 MPs with tunable afterglow properties and size distributions is reported. These mechanism studies suggest that the pseudomorphic transformation of SiO2 MPs enables CD doping, providing a hydrogen bond‐enriched environment for triplet state stabilization, which generates green afterglow while retaining the uniformity in size and morphology of the parent SiO2 MPs. Furthermore, the utility of CD‐doped SiO2 MPs in the fabrication of rationally designed PC patterns is shown using a combined consecutive dip‐coating and laser‐assisted etching strategy. The pattern displays multiple optical responses under different lighting conditions, including angle‐dependent structural colors and blue luminescence under daylight and upon 365‐nm irradiation, respectively, as well as time‐dependent green afterglow after ceasing UV excitation. The findings pave the way for further controlling the dynamics of spontaneous emissions by PCs to enable complicated optical states for advanced photonics.
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Research context

Electronic materials

OpenAlex topics: Carbon and Quantum Dots Applications · Luminescence and Fluorescent Materials · Ga2O3 and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Frontiers Science Center for Flexible Electronics (FSCFE) MIIT Key Laboratory of Flexible Electronics (KLoFE) Shaanxi Key Laboratory of Flexible Electronics Xi'an Key Laboratory of Flexible Electronics Xi'an Key Laboratory of Biomedical Materials & Engineering Xi'an Institute of Flexible Electronics Institute of Flexible Electronics (IFE) Northwestern Polytechnical University Xi'an Shaanxi 710072 China

State Key Laboratory of Fine Chemicals Dalian University of Technology 2nd Linggong Road Dalian 116024 China

Department of Biomedical Engineering Southern University of Science and Technology Shenzhen Guangdong 518055 China

Department of Chemistry and School of Energy and Chemical Engineering UNIST Ulsan 44919 Republic of South Korea

Department of Chemistry Nazarbayev University Astana 010000 Kazakhstan

Institute of Photoelectronic Thin Film Devices and Technology Solar Energy Conversion Center Nankai University Tianjin 300350 China

Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Nanjing University of Posts &Telecommunications 9 Wenyuan Road Nanjing 210023 China

Key Laboratory of Flexible Electronics (KLOFE) Institute of Advanced Materials (IAM) Nanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 China

Funding

National Natural Science Foundation of China · Northwestern Polytechnical University · Fundamental Research Funds for the Central Universities

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