Phonon and bandgap engineering-driven Y-doped Mg_(2)Al_(4)Si_(5)O_(18)ceramics for high-performance radiative coolingOA
Passive radiative cooling(PRC)is a promising way to alleviate the global energy crisis by reflecting sunlight and dissipating heat through the atmospheric transparent window(ATW).Despite possessing a wide bandgap and complex phonon modes,the PRC performance of Mg_(2)Al_(4)Si_(5)O_(18)is limited by phonon-polariton resonance.Herein,phonon engineering is integrated with bandgap engineering to design and synthesize a series of Mg_(2)Al_(4)Si_(5)O_(18):xY^(3+)(x=0%,2.5%,5%,7.5%,and 10%)ceramics with excellent PRC performance.Density functional theory(DFT)identifies that Y3+doping effectively suppresses phonon-polariton resonance and widens the bandgap,synergistically enhancing the PRC performance.The as-prepared samples exhibit high ATW emissivity(94.39%-98.39%)and high reflectivity(89.52%-94.77%)in the 0.4-2.5μm range.Furthermore,the“cooling glass”coating successfully achieves a maximum temperature reduction of 16.5℃and an average net radiative cooling power of 113.1 W·m−2.Y3+doping enhances ATW emissivity by inducing lattice distortion,which reduces symmetry and alters the dipole moment while boosting reflectivity in the visible and near-infrared(vis-NIR)regions by preserving the wide bandgap through the introduction of optically inert elements.This work synergistically integrates the advantages of high performance,low cost,and environmental friendliness,offering a highly promising ceramic material solution for large-scale radiative cooling applications.
Di Wu;Mohan Zhang;Xin Wang;Ting Wang;Jiaxin Ye;Liyan Xue;Minzhong Huang;Meng Zhang;Fan Yang;Huimin Xiang;Heng Chen
State Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350117,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian College,University of Chinese Academy of Sciences,Fuzhou 350002,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350117,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian College,University of Chinese Academy of Sciences,Fuzhou 350002,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China College of Chemistry and Materials Science,Fujian Normal University,Fuzhou 350117,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian College,University of Chinese Academy of Sciences,Fuzhou 350002,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy Systems,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy Systems,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy Systems,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy Systems,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China China Rare Earth Group Innovation Technology Co.,Ltd.,Guangdong 518000,China China Rare Earth Group Research Institute,Shenzhen,Guangdong 518000,ChinaSchool of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,ChinaState Key Laboratory of Structure Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials,Xiamen Institute of Rare Earth Materials,Xiamen 361021,China Fujian Province Joint Innovation Key Laboratory of Fuel and Materials in Clean Nuclear Energy Systems,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China
化学化工
passive radiative cooling(PRC)phonon and bandgap engineeringY-dopingβ-Mg_(2)Al_(4)Si_(5)O_(18)dual-selective atmospheric transparent window emissivityvisible and near-infrared reflectivity
《Journal of Advanced Ceramics》 2026 (5)
P.203-215,13
supported by the National Natural Science Foundation of China(No.52402093)the Self-deployment Project Research Programs of Haixi Institutes,Chinese Academy of Sciences(No.CXZX-2023-JQ07)the XMIREM Autonomously Deployment Project(No.2023GG03)the Natural Science Foundation of Xiamen(Nos.3502Z202472048 and 3502Z202573100)the Outstanding Youth Fund of Henan Province(No.252300421006).
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