Seminar & Colloquium
[세미나: 10월 30일(수), 오전 9시] Prof. Yuanyuan (Alvin) Zhou, HKUST
Title
Perovskite Hetero-Interface Microstructure and Intra-Crystal Disorder
Speaker
Prof. Yuanyuan (Alvin) Zhou, Department of Chemical & Biological Engineering, HKUST
* Biography
Yuanyuan (Alvin) Zhou is a university-endorsed Star Faculty and Associate Professor (Tenured) at HKUST. He obtained his B.S. degree from Xi’an Jiaotong University and his Ph.D. degree from Brown University, both in materials science and engineering. He started his independent research career in the Department of Physics at HKBU in September 2020 as an Assistant Professor. In September 2023, he moved to the Department of Chemical and Biological Engineering at HKUST as Associate Professor with Tenure under the university’s prestigious “30 for 30” global talent acquisition scheme. He has authored more than 120 journal publications with 13,000 Google citations and 57 H-index. He has received top honors continuously throughout his research career, including Brown University Outstanding Engineering Thesis Award, HKBU Presidential Young Research Award, National Natural Science Foundation of China (NSFC) Excellent Young Scientist Award, and HKUST Star Faculty. He serves as Associate Editor for the Journal of Energy Chemistry – Elsevier and Advisory Board Member for Device - Cell Press. Prof. Zhou’s research group ΣLab leverages fundamental innovations to transform the semiconductor science and technologies, having recently published a range of high-profile perovskite research works in top journals such as Science and Nature Energy.
| Date | Wednesday, October 30th, 2024
| Time | 09:00 ~ 10:00
| Venue | 33동 222호(동부 세미나실)
[Abstract]
Perovskite hetero-interface microstructure and intra-crystal disorder can influence the properties and performance of resultant solar cells and optoelectronics, which remain terra incognita. In my talk, I will discuss our recent developments on the novel characterization and tailoring of these two microstructural factors, which contribute to elevating our fundamental understanding of microscopic structure-property-performance relationship in perovskites. Specifically, I will introduce two prototypical perovskite hetero-interface design featuring engineered grain-boundary grooves and chiral-structured interlayers, respectively. Then, we will illustrate our findings on performance-limiting intra-crystal disorders and their intriguing structural dynamics, enabled by our latest innovations in scanning transmission electron microscopy methodologies. The unprecedented microstructural designs of hetero-interface and intra-crystal disorder contribute to improved carrier injection, chemical stability, and mechanical reliability of perovskite solar cells. Finally, I will provide the perspectives and current ΣLab efforts pushing the frontier of perovskite knowledge as well as the broad materials research via unravelling emergent microstructural phenomena.
| Host | 이태우 교수(02-880-8021)