Seminário Enhanced optical properties of interfaced quantum semiconductors - Prof. Jeongyong Kim - Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea

No próximo dia 6 de outubro, às 14 horas na sala de Seminários Swieca Nova/PPGF, localizada no Prédio do DF/CCET, acontecerá a Palestra: Enhanced optical properties of interfaced quantum semiconductors, com o Prof. Jeongyong Kim do Department of Energy Science, Sungkyunkwan University, Suwon 16419, Korea - *E-mail: j.kim@skku.edu 

Abstract:

Quantum semiconductors, characterized by their unique quantum confinement effects, offer
remarkable possibilities for tailoring the optical properties at the nanoscale. While two-dimensional
(2D) semiconductors and quantum dots (QDs) offer exciting exciton properties [1,2], the
hybridization of these quantum semiconductors can provide the further enhanced optical properties
that are not achievable by single-element quantum materials. In this talk, I will discuss the recent
progress of our group on synthesizing MXene QDs [3] and how they can contribute to enhancing the
UV response and quantum yield (QY) of monolayer transition metal dichalcogenides (TMDs) by
interfacing with 2D semiconductors [4]. As a 2D/2D hybrid configuration, we show that fine tuning of
exciton properties of ReS 2 can be achieved by vdW twist angle of stacked ReS 2 [5]. I will also discuss
the use of machine learning to predict QY of monolayer WS 2 [6].

[1] Y. Lee, et al, Nat. Commun. 12, 7095 (2021)
[2] A. S. Sharbirin et al, J. Mater. Chem. C 10, 6508 (2022)
[3] A. S. Sharbirin et al, under review
[4] W. B. Mato et al, under review.
[5] K. Dhakal et al., manuscript in preparation
[6] J. W. P. Khor et al, under review.