报告题目：Interface Research Work on White OLED
White OLED has acquired great attention due to unique properties, e.g. thin, light, flexible, energy saving, which had been utilized as backlight of LCD display and indoor illumination. But, the device performance of white OLEDs is rather poorer relative to LED, especially in device lifetime and color stability, which hold back utilization progress of white OLED. In our early work, it has been identified that the existence of plenty of interface in white OLED induce in degradation of device performance. The interface is usually unstable in chemical and physical properties, owing to different material structure or molecular structure in both sides of interface. Hence, it is demonstrated by our group that optimization and modification of interface structure can improve device performance. In our work, white-light phosphorescence polymers with hyperbranced structure were designed and synthesized, which can be utilized in white OLED with single emission layer for decreasing multilayers interface; homogeneous interface of AlQ3 were modified by SiO2 for avoiding invasion of moisture and oxygen, resulting in prolonging device lifetime; ultra-high color stable three color fluorescent-phosphorescent hybrid white OLED was designed and fabricated by lowering heterogeneous interface number in emitting layers, which exhibit ideal CCTs around 3810 K and stable CIE coordinates of (0.40, 0.41) with high CRI of 85-86 upon variation in brightness from 100 to 5000 cd/m2. In one word, it is suggested that interface research is very important for enhancing performance of white OLED.
王华，教授/博导师，教育部新世纪人才，山西省学术技术带头人，山西省青年学科带头人，太原理工大学新材料界面科学与工程教育部重点实验室副主任，太原理工大学新材料工程技术研究中心副主任。围绕有机光电材料的研究，在国内外具有影响力的Journal of Material of Chemistry，Organic Electronics和Applied Physics Letters等学术期刊发表论文60余篇，获国家发明专利30余项和1项美国发明专利，获得1项国家科技进步奖（排名第三）和1项山西省技术发明二等奖（排名第一），承担与参与国家自然科学基金项目5项。主要研究方向为有机光电材料与器件，具体内容包括：OLED发光材料的设计、制备与性能研究；OLED照明与显示器件的制备与特性研究；OLED中的界面结构与界面特性研究；基于共轭聚合物的荧光探针的制备及在生物学中的应用研究。