A 2020 review paper published by Prof Wee-Liat Ong and his KAUST collaborators on “Halide perovskites: thermal transport and prospects for thermoelectricity” in Advanced Science was recently recognized as one of the “ESI Highly Cited Papers” on Web of Science. Highly Cited Papers are papers that gathered sufficient citations to place them in the top 1% of a particular academic field.
Advanced Science is an interdisciplinary journal covering fundamental and applied research in many areas including materials science, physics and chemistry, medical and life sciences, as well as engineering. Advanced Science has a 2020 Impact Factor of 16.806.
This paper summarizes the recent re-emergence of halide perovskites for optoelectronic applications. The multifunctional nature of halide perovskites has led to diverse applications other than photovoltaics. The ultralow thermal conductivity coupled with decent mobility and charge carrier tunability made it a contender for future thermoelectrics. This paper describes recent advances in the understanding of thermal transport in halide perovskites. The structural and compositional effects on phonon transport are analyzed. Understanding thermal transport is critical for devising effective heat dissipation schemes and determining other thermal-related properties like thermo-optic coefficients, hot-carrier cooling, and thermoelectric efficiency. Their potentials and challenges for thermoelectrics are also reviewed. Finally, strategies to overcome the limiting factors for creating good halide perovskite thermoelectrics are explored.
Wee-Liat Ong joined ZJUI in 2018 as an Associate Professor and is currently the Acting Director for the Program in Engineering Sciences for Devices and Applied Materials. He received his B.Eng and M.Eng. degrees from the National University of Singapore and completed his Ph.D. degree from Carnegie Mellon University in 2015. Before his Ph.D., he worked at the Institute of Microelectronics (A*STAR, Singapore) in the field of bioMEMS and microfluidics. He was previously a joint post-doctoral fellow at Columbia University and Carnegie Mellon University. His current research interests include engineering thermo-physics (experimental and simulation), BioMEMS, and energy. He has published several articles in leading academic journals, including Nature Materials, Nano Letters, ACS Nano, Advanced Science, and Lab on Chip.
