项目名称: 镁掺杂ZnO颗粒性质对喷墨打印图案微结构和紫外光电性能的影响
项目编号: No.51302252
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 一般工业技术
项目作者: 吴艳
作者单位: 中国地质大学(武汉)
项目金额: 22万元
中文摘要: 近年来,紫外探测波段可调控的镁掺杂ZnO(ZnMgO)材料成为新型紫外探测器研究的热点,而研究低成本、高质量的ZnMgO光电薄膜及器件是该领域研究的重点。喷墨打印技术在功能材料的薄膜图案化和光电微型器件的应用受到广泛关注,而控制功能溶质颗粒在基板上形成图案形貌的准确性和薄膜的均匀性,是喷墨打印功能材料的关键。本项目通过湿化学合成方法制备不同尺寸、形貌的ZnMgO纳米晶粒,通过双溶剂分析墨滴干燥过程的毛细流和Marangoni流动对均匀沉积的影响,研究其成形的影响因素,分析其颗粒形貌、大小和溶剂性质等对薄膜图案质量的影响关系。进一步通过改变镁掺杂浓度,调节薄膜带隙和控制材料微结构,实现对材料光电性质的剪裁,探讨所得薄膜的紫外光电特性,研究其响应机理。本项目不仅可以为研究实现均匀沉积固体颗粒层提供新的途径,而且对于理解无机金属氧化物的墨滴成形机理和研发高精度功能薄膜图案器件提供一定的理论依据。
中文关键词: 氧化锌;喷墨打印;微观结构;光催化;电化学
英文摘要: Mg-doped ZnO materials, known as tunnable bandgaps in the ultraviolet light region, recently are studied widely for the application of ultraviolet detectors. Fabrication of low-cost and high-quality ZnMgO thin film and device is crucial for the practial application. High-precision pattern and device of functional materials via inkjet printing technique are of great interest for their impormtant applications in high performance optical and electrical mini devices,but the control of the forming size of ink droplets on substrate is important to inkjet printing.In this project,we synthesize Mg-doped ZnO nanocrystals with different sizes and morphologyies through wet chemistry method, and then select the double-solvent components which is stable for the suspension of the nanoparticles and also printable to form continous patterns. By ananlyzing the capillary flow and Marangoni flow during the droplet drying process,we investigate the influence factors of the droplets drying and find out the relation of the particle morphology, size and solvent properties affecting the quality of the printing pattern and thin film. Furthermore, changing the doping concentration to adjust the bandgap of the film and controlling the microstructure,could realize the desired UV photoelectric properties.The UV photoconductivity will be d
英文关键词: ZnO;inkjet printing;microstructure;photocatlystic;electrochemical