Publikation: Light patterning semiconductor nanoparticles by modulating surface charges
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Optical patterning of colloidal particles is a scalable and cost-effective approach for creating multiscale functional structures. Existing methods often use high-intensity light sources and customized optical setups, making them less feasible for large-scale microfabrication processes. Here, we report an optical patterning method for semiconductor nanoparticles by light-triggered modulation of their surface charge. Rather than using light as the primary energy source, this method utilizes UV-induced cleavage of surface ligands to modify surface charges, thereby facilitating the self-assembly of nanoparticles on a charged substrate via electrostatic interactions. By using citrate-treated ZnO nanoparticles, uniform ZnO patterns with variable thicknesses can be achieved. These multilayered ZnO patterns are fabricated into a UV detector with an on/off ratio exceeding 104. Our results demonstrate a simple yet effective way to pattern semiconductor nanoparticles, facilitating the large-scale integration of functional nanomaterials into emerging flexible and robotic microdevices.
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HE, Xiaoli, Hongri GU, Yanmei MA, Yuhang CAI, Huaide JIANG, Yi ZHANG, Hanhan XIE, Ming YANG, Xinjian FAN, Liang GUO, Zhan YANG, Chengzhi HU, 2024. Light patterning semiconductor nanoparticles by modulating surface charges. In: Nature Communications. Springer. 2024, 15(1), 9843. eISSN 2041-1723. Verfügbar unter: doi: 10.1038/s41467-024-53926-7BibTex
@article{He2024-11-13Light-72159, title={Light patterning semiconductor nanoparticles by modulating surface charges}, year={2024}, doi={10.1038/s41467-024-53926-7}, number={1}, volume={15}, journal={Nature Communications}, author={He, Xiaoli and Gu, Hongri and Ma, Yanmei and Cai, Yuhang and Jiang, Huaide and Zhang, Yi and Xie, Hanhan and Yang, Ming and Fan, Xinjian and Guo, Liang and Yang, Zhan and Hu, Chengzhi}, note={Article Number: 9843} }
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