Na^(+)和K^(+)掺杂WO_(3)的近红外屏蔽性能研究  

Study on the near-infrared shielding performance of Na,K dual cation-doped WO_(3)

作　　者：黄婧怡 郭树铮 曹凤泽 塔娜 潮洛蒙 HUANG Jingyi;GUO Shuzheng;CAO Fengze;TA Na;CHAO Luomeng(School of Science,Inner Mongolia University of Science&Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学理学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2025年第1期97-102,共6页Journal of Inner Mongolia University of Science and Technology

基　　金：国家自然科学基金(52266014);内蒙古自治区高等学校“青年科技英才”(NJYT24062)。

摘　　要：通过Na和K双阳离子共掺杂WO_(3),制备了Na_(0.22)K_(0.11)WO_(3)纳米颗粒,系统的探究其微观结构、电子特性及光学性能。实验结果表明:双阳离子掺杂显著提升了自由电子浓度,通过局域表面等离子共振效应增强了近红外(780~2500 nm)吸收,同时保持较高的可见光透过率。X射线光电子能谱证实了W^(5+)/W^(6+)的共存,密度泛函理论计算进一步揭示了双阳离子掺杂对能带结构的优化作用。K^(+)的引入导致晶格扰动,费米面附近局域化电子态的增加促进了载流子迁移,从而提升近红外屏蔽性能。相较于单一阳离子掺杂材料(Na_(0.33)WO_(3)和K 0.33 WO_(3)),双掺杂样品在近红外吸收和能量损失谱中表现出更优特性。此研究为开发高效节能智能窗户材料提供了新思路。In this paper,Na_(0.22)K_(0.11)WO_(3)nanoparticles were prepared by co-doping WO_(3)with Na and K dual cations,and their microstructure,electronic properties,and optical performance were systematically investigated.The experimental results show that dual cation doping significantly enhances the free electron concentration,and the localized surface plasmon resonance effect strengthens near-infrared(780~2500 nm)absorption,while maintaining a high visible light transmittance.X-ray photoelectron spectroscopy confirmed the coexistence of W^(5+)/W^(6+),and density functional theory calculations further revealed the optimization of the band structure by dual cation doping.the introduction of K^(+)caused lattice disturbance,increasing the localized electronic states near the Fermi level,which promoted carrier mobility and enhanced near-infrared shielding performance.Compared to single cation-doped materials(Na_(0.33)WO_(3)and K 0.33 WO_(3)),the dual-doped sample exhibited better characteristics in terms of near-infrared absorption and energy loss spectra.This study provides new insights for the development of efficient energy-saving smart window materials.

关 键 词：钨青铜 纳米晶 近红外吸收 智能窗户 

分 类 号：O469[理学—凝聚态物理]