时间：2025年3月5日（周三） 15:00-16:30

Time: 15:00-16:30, Wednesday, March5, 2025

地点：西湖大学云谷校区学术环E10-205

Venue:E10-205, Academic Ring, Yungu Campus

主持人: 西湖大学工学院 师恩政博士

Host: Dr. Enzheng Shi, Assistant Professor, Westlake University

语言：中文

Language: Chinese

主讲嘉宾/Speaker：

Prof. Baodan Zhao赵保丹

长聘副教授，研究员

光电科学与工程学院

浙江大学

主讲人简介/Biography:

Baodan Zhao obtained her PhD in Physics from the University of Cambridge, UK. Her doctoral supervisor was Professor Sir Richard H. Friend (FRS, FREng, FIEE, FInstP, Kt), the Cavendish Professor of Physics. Her research focuses on the physics and optical properties of perovskite light-emitting devices. As first/corresponding author, Baodan published her results in top academic journals including Nature, Nature Photonics, Nature Electronics, Nature Nanotechnology, Science Advances and Advanced Materials. Baodan has created efficiency records for perovskite LEDs and demonstrated stable perovskite LEDs with ultralong lifetimes, paving the path towards real-world applications. Baodan has been selected to the MIT Technology Review "Innovators Under 35, China" (2019), Damo Academy Young Fellow (2020), Forbes Under 30 China (2020), Forbes Under 30 Asia (2021), distinguished Young Scholar of Zhejiang Province (2021), and the NSFC Outstanding Young Scientist (Overseas) (2022).

讲座摘要/Abstract:

As an emerging display technology, perovskite LEDs show promising advantages such as excellent color purity, spectral tunability, flexibility and low cost. However, there are several critical challenges to be overcome to achieve commercialization, including efficiency, brightness, operational stability and downscaling. In 2018, 20% efficient perovskite LEDs were reported, allowing perovskite-based LEDs to join the league of state-of-the-art organic and quantum-dot LEDs. In terms of brightness, the highest brightness achieved in our green perovskite LEDs was 1.16 million nits, a new record for the brightness of solution-processed LEDs, including OLEDs, quantum-dot LEDs, and perovskite LEDs. The high brightness is enabled by the controllable electrical doping in perovskite semiconductors. Regarding stability, OLED-like device stability was demonstrated for perovskite LEDs. This work removes the critical concern that perovskite devices may be intrinsically unstable. With perovskite semiconductors, micro/nano-LEDs could be downscaled to below the conventional size limits to 90 nm, demonstrating average efficiencies maintained at around 20% across a wide range of pixel lengths. This work shows the promise of perovskite LEDs for AR/VR display applications.

[1] W. Xiong, W. Tang, G. Zhang, Y. Yang, Y. Fan, K. Zhou, C. Zou, B. Zhao* & D. Di*, Nature 633, 344‐350 (2024).

[2] B. Zhao#, B. Guo#, S. Xing#, Z. Liu#, Y. Yuan, Z. Ren, W. Tang, Y. Lian, G. Zhang, C. Zou* & D. Di*, Matter 7, 1‐22 (2024).

[3] B. Guo, R. Lai, S. Jiang, L. Zhou, Z. Ren, Y. Lian, P. Li, X. Cao, S. Xing, Y. Wang, W. Li, C. Zou, M. Chen, Z. Hong, C. Li, B. Zhao* & D. Di*, Nature Photonics 16, 637‐643 (2022).

讲座联系人/Contact:

朱云云

zhuyunyun@westlake.edu.cn