香港浸会大学 朱福荣教授 12月25日上午学术报告

发布时间:2019-12-16访问量:228设置

报告人:朱福荣教授 香港浸会大学物理系、有机电子卓越研究中心、先进材料研究所

报告题目近红外和可见光双模式有机光探测器

报告时间:1225日上午10:00(周三)

报告地点:909-B

  

报告摘要:

传统的光探测器通常只有一个波段的工作模式,需要利用滤光片来实现探测窗口波长可调。在本工作中,我们提出一种近红外光和可见光双模式有机光探测器,其器件结构包括可见光吸收层、可见光耗尽层和近红外光吸收层。通过研究发现,基于此结构的有机光探测器具有优异近红外光和可见光两种不同频谱响应特性。在近红外光照射下,光电流从近红外吸收层产生,其工作原理是在负偏压下,有机层/阴极的界面陷阱诱导载流子注入产生近红外光响应。而在可见光的照射下,光电流则从可见光吸收层产生,原理是在正偏压下,可见光响应是由在阳极/有机层界面的陷阱诱导载流子注入所致。此双模式光探测器在负偏压的驱动下,表现出优异的可见光盲型近红外响应。在正偏压的驱动下,具有非常好的近红外光盲的高可见光响应。对短波段和长波段的入射光均高达10 A/W的响应度。

相对于传统的单模式光探测器,高性能近红外和可见光双模式探测器为新型无滤光片多波段光探测技术提供了新的设计理念和应用。结合有机光探测器的高响应度、低成本可溶液加工、可大面积制造、柔软性等优点,双模式有机光探测技术在双波段成像、环境污染探测、现代农业、医疗健康和安防检测等诸多领域展现出良好的应用前景。

  

个人简介:

Furong Zhu is a Professor in the Department of Physics and the Associate Director for Institute of Advanced Materials at Hong Kong Baptist University (HKBU). He received his BSc and MSc in Physics from Fudan University, Shanghai China, in 1983 and 1987. He completed his Ph.D in Applied Physics at Charles Darwin University in Australia from 1990-1993. He did his post-doctoral research in the Department of Electrical and Electronic Engineering at Kyoto University in Japan from 1993-1995, and was a Research Fellow with the Department of Physics at Murdoch University in Australia from 1995-1997 working on silicon thin films derived from plasma enhanced chemical vapor deposition for device application. He joined Institute of Materials Research and Engineering (IMRE) in Singapore in 1997. Prior to HKBU, he was a Senior Scientist and a Program Manager leading the organic light-emitting diode (OLED) and organic photovoltaic (OPV) R&D activities at IMRE. His current interests include organic solar cells, field effective transistors, light-emitting diodes, NIR photodetectors, and perovskite photo electronic devices.

  

联系人:唐建新


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