武汉光电论坛第124期

报告题目：应用于光电子和生物医学先进材料和器件中的发光离子

Luminescence Ions in Advanced Materials and Devices for Optoelectronic and Biomedical Applications

时 间：2017年6月1日10:00-12:00

地 点：光电国家实验室A101

报 告 人：郝建华 教授，香港理工大学

邀 请 人：骆清铭 教授

报告人简介：

郝建华是香港理工大学应用物理学系教授兼任副主任和研究委员会主席。郝教授在华中科技大学获得学士，硕士和博士学位。在华中科技大学，美国宾州州立大学，加拿大圭尔夫大学和香港大学工作后，2006年开始执教于香港理工大学。郝教授发表过210多篇SCI国际杂志学术论文，ESI材料科学高引科学家之一。是5个美国专利第一发明人。在香港理工大学作为课题负责人(PI), 主持了14项受政府资助的研究课题。获得过“香港理工大学学院研究学术杰出成就个人奖”，“纳米科学研究领先奖”，“材料研究贡献奖”，“45届日内瓦国际发明特别优异奖和金奖”等奖项。他是几个国际杂志的编委/高级编辑，例如NPG集团的“科学报告”和Wiley出版社的“先进光学材料”，是香港物理学会的副主席（2015-2017）。他是许多国际会议的主席/分会主席/组委，并在众多大会上作过大会/主题/邀请报告。郝教授目前主要研究兴趣包括 （1）用于光电子，能源和生物医学的发光学和发光材料；（2）功能薄膜，二维层状材料和异质结。(研究组网页: http://ap.polyu.edu.hk/apjhhao/)

Biography:

Jianhua Hao is a Full Professor, Associate Head and DRC Chair in the Department of Applied Physics at the Hong Kong Polytechnic University (PolyU). Prof. Hao received his Bachelor, Master and Doctoral degrees at Huazhong University of Science and Technology (HUST), China. After working at HUST, Penn State University, USA, University of Guelph, Canada and the University of Hong Kong, Prof. Hao joined the faculty in PolyU in 2006. Prof. Hao has published over 210 SCI papers. He has been listed as one of Most Cited Scientists in Materials Science by ESI. He is the first inventor of 5 US patents. Prof. Hao has been teaching “Semiconductor Materials & Devices”, “Display Technology” and other courses. As Chief Supervisor, he has supervised more than 20 PhD and MPhil postgraduate students and many Postdocs/RAs in PolyU. Prof. Hao has been PI in 14 government external competitive grants in PolyU. He has received some awards, including Faculty Award for Outstanding Performance/Achievement in Research & Scholarly-Individual in PolyU, Nanoscience Research Leader Award, Materials Research Contribution Award, and Special Merit Award and Gold Medal with the Congratulations of Jury at the 45thInternational Exhibition of Inventions of Geneva. He serves as Editorial Board Member/Senior Editor for several international journals, such as Scientific Reports（NPG）and Advanced Optical Materials (Wiley). He is now Vice-President of Physical Society of Hong Kong (2015-2017). He was General Chair/Session Chair/Organizing Committee Member in many international conferences and also invited to give a number of Plenary/Keynote/Invited Lectures in various conferences. Prof. Hao’s current research interests include (1) Luminescence and phosphors for photonic, energy and biomedical applications; (2) Functional thin-films, two-dimensional layered materials and heterostructures (Hao research group website: http://ap.polyu.edu.hk/apjhhao/).

报告摘要：

金属离子激活的材料和器件已在科学研究和实际应用领域得到广泛的尝试。荧光离子丰富多彩的发光性质极为令人关注，在多功能应用中起到重要的作用。本报告将介绍我的研究组最近几方面的工作。首先，镧系掺杂上转化发光纳米材料作为探针或造影剂可用于包括荧光，MRI，X光和CT多模式生物成像技术。具有高灵敏度和快速响应的生物传感器，对于以有效方式及时准确地检测各种病毒基因极为重要。我们开发了上转换荧光纳米生物传感器用于病毒检测。另外，我的研究组研发了可以探测和获取对各种外界刺激的发光离子掺杂的复合材料。通过将磁场耦合到压电光子学，提出和实现了磁致发光（MIL）。另外，纳米电子和光电子器件的最终目标促进了原子层薄的二维材料研究。我们通过引入稀土离子到二维半导体实现了上下转换发光。最后，我们展示了引入金属离子以及环境友好型的摩擦发电机，将环境机械能转换为电能和光发射。这些工作将有助于发展未来能源器件和自驱动传感器。

Abstract:

Metal ions-activated materials and devices have been widely applied in both scientific research and practical fields. The ability of a broad range of luminescent ions to generate fascinating emissions has played important roles in multifunctional applications. Several aspects of my group’s recent works will be introduced in my talk. Firstly, lanthanide-doped upconversion fluorescent nanocrystals as probes or contrast agents are used in multimodal bioimaging techniques, including fluorescence, MRI, X-ray and CT. Biosensors with both high sensitivity and rapid response are greatly desired for enabling rapid and sensitive detection of various virus gene in a cost-effective way. We have developed upconversion nano biosensor for virus detection. Secondly, my group have developed luminescent ion-doped composites, which can sense or harvest various stimuli. Magnetic-induced luminescence (MIL) has been proposed and realized by coupling magnetic field to piezophotonics. Moreover, the ultimate goal of making nanoscale electronic and optoelectronic devices stimulates atomically thin two-dimensional (2D) material research. We have introduced rare-earth dopants into 2D semiconductors and realize down-/up-conversion luminescence. Lastly, we have demonstrated metal ion incorporated and environmentally friendly triboelectric nanogenerators converting ambient mechanical energy into electricity and light-emissions. The works may contribute to future energy devices and self-powered sensors.

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