Publication in npj 2D Materials and Applications
Significant breakthrough in the field of valleytronics by demonstrating strong room-temperature valley polarization in tungsten diselenide (WSe2) and molybdenum diselenide (MoSe2) monolayers through electrochemical doping.
We are excited to share our latest work published in npj 2D Materials and Applications, titled "Inducing Room-Temperature Valley Polarization of Excitonic Emission in Transition Metal Dichalcogenide Monolayers." Our research team, led by Dr. Sergii Morozov, has made a significant breakthrough in the field of valleytronics by demonstrating strong room-temperature valley polarization in tungsten diselenide (WSe2) and molybdenum diselenide (MoSe2) monolayers through electrochemical doping.
This work addresses a major challenge in utilizing transition metal dichalcogenides (TMDs) for next-generation valleytronic devices. Our findings show that by achieving electron doping levels beyond 10^13 cm^(-2), we can induce a valley contrast of 61% and 37% at room temperature in WSe2 and MoSe2 monolayers, respectively. This advancement opens new avenues for developing efficient valleytronic devices operational at 300 K.
The potential of charged excitons in TMD monolayers, as demonstrated in our study, highlights the importance of controlling parasitic depolarization processes for practical valleytronics applications. We believe that our approach to manipulating the valley depolarization dynamics through strong doping provides a scalable and efficient way to harness the full power of valleytronics at room temperature.
For more details on our methods and findings, I invite you to read our paper: Inducing Room-Temperature Valley Polarization of Excitonic Emission in Transition Metal Dichalcogenide Monolayers.
This milestone achievement was made possible through the collaborative efforts of our team at the University of Southern Denmark (SDU), between Center for Polariton-driven Light–Matter Interactions (POLIMA) and Center of Nano Optics (CNO). We're eager to continue exploring the vast potential of TMD monolayers in revolutionizing the field of quantum information processing and beyond.
