蔡国发

蔡国发.jpg蔡国发,河南省特聘教授,博士生导师。现工作于河南大学材料学院、特种功能材料教育部实验室,高效照明与显示国家地方联合工程中心。主要研究方向为电致变色纳米材料与大尺寸多功能器件,以第一(通讯)作者在Sci. Adv.Adv. Energy Mater.ACS Energy Lett.Nano EnergyAcc. Chem. Res.等期刊发表SCI论文28篇(共48篇)。论文多次被Nature Mater.Chem. Rev.等期刊重点评述,ESI高被引论文6篇,论文他引3400余次。受邀为Nature EnergyNature Commun.等期刊评审和仲裁稿件;主持国家自然科学基金和参与新加坡重点科研项目各2项,授权国际国内发明专利5件。


Cai Guofa, Distinguished Professor of Henan Province,Doctoral supervisor. Now he is working in Key Laboratory for Special FunctionalMaterials of Ministry of Education, National & Local Joint Engineering Research Center forHigh-efficiency Display and Lighting Technology, School of Materials Scienceand Engineering, Henan University. His research interests mainly focuson electrochromic nanomaterials and large sizemultifunctional devices. As the first or corresponding author, theapplicant has published 28 research articles in academic journals over the pastfew years, such as Sci. Adv., Adv. Energy Mater., Acc. Chem. Res.,ACS Energy Lett., Nano Energy etc.These publications have been commented emphaticallyby Nature Materials, Chem. Rev. and other academic journals for many times, andhave attracted more than 3400 citations, of which six papers are identified asthe ESI highly cited paper. The applicant was invited to review and arbitratemanuscripts for some academic journals, such as Nature Energy, Nature Commun. etc. Moreover, the applicant haspresided over and participated in 2 national research projects each, and 5domestic and international invention patents have been authorized.



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电致变色节能显示器:未来显示技术的发展趋势之一

蔡国发

河南大学特种功能材料教育部重点实验室,高效显示与照明技术国家地方联合工程研究中心,材料学院


       在外加电场作用下,电致变色显示器通过离子的嵌入/脱出改变自身光学性质以显示信息,是一种很有前途的高效节能器件。电致变色显示器一旦激活不需要消耗能量就可以维持显示的内容,即使在改变显示内容的过程中也仅需要极少量的能量输入。此外,由于电致变色显示器的非光发射特性及对人眼友好的优点,在节能电子书、电子货架标签等光电信息器件中有着广泛的应用前景。基于此,我们阐述了电致变色纳米材料的先进设计与构筑策略,多功能智能显示器的合理构建思路及其性能表征方法。通过解析变色层-电解质耦合机制,提出界面调控提升离子与电子传输速率适配度的新策略,研制了超高光学调制范围的变色材料,为构建大尺寸高性能电致变色器件奠定了基础;通过调控油墨各组分以及与电极间的相互作用,建立了变色材料兼容电极的大面积湿法成膜新技术,构建了半米乘半米的超大尺寸电致变色器件,为低成本、大尺寸、高性能电致变色器件的构建及规模化生产提供了关键技术和理论基础;通过精确设计各功能层的匹配关系,构筑了多功能柔性器件新体系,将电致变色的应用拓展到可穿戴智能光电器件等领域。



Energy efficient electrochromic display: a promisingtrend in the future of display

Guofa Cai*

Key Laboratory forSpecial Functional Materials of Ministry of Education, National & Local Joint Engineering Research Center forHigh-efficiency Display and Lighting Technology, School of Materials Scienceand Engineering, Henan University, Kaifeng 475004, China


As a promising energy efficient device,electrochromic display presents information via insertion and extraction of small ions when external electrical field isapplied. The electrochromic device does not consume energy to maintain thedisplay once activated, the display information exchange process can also berealized with a very little input energy. Moreover, because of the non-lightemissivecharacteristic, the electrochromic display isfriendly to human eyes. Therefore, the electrochromic display has broadapplications in energy efficient e-books, electronic shelf label and otherphotoelectric information devicesetc.Herein, we illustrate current state-of-artstrategies for the fabrication of nanostructured electrochromic materials,rational design of multifunctional smart displays, and the characterization oftheir performance. By analyzing the coupling mechanism between theelectrochromic layers and the electrolyte, we proposed a new interfaceregulation strategy to improve the compatibility of ion and electron transportrate, and developed an electrochromic material with opticalmodulation of up to 97.7%. By adjusting the interaction between the inkcomponents and the electrode, a novel technology of large-area film formationwas established with the compatible feature of the electrochromic layer and theelectrode, and a large-size (50 ´ 50 cm2) electrochromic device was firstlyconstructed. A novel system of multifunctional and flexible devices wasdemonstrated by precisely designing the matching relationship between eachfunctional layer. The application of electrochromism was extended to the fieldsof wearable intelligent optoelectronic device and other fields.




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