Thickness-dependent excitonic properties of WSe₂/FePS₃ van der Waals heterostructures

Abstract

Van der Waals heterostructures (vdWHs), with flexible combination of various two-dimensional (2D) materials, are continuously revealing new physics and functionalities. 2D magnetic materials have recently become the focus due to...

Exciton Dynamics of TiOPc/WSe2 Heterostructure

“…The observation aligns with the temperature characteristics commonly observed in 2D semiconductors. 51,52 In the case of the TiOPc/WSe 2 , the emission peak position at 1.53 eV remains almost unchanged with the temperature increases from −120 to 120 °C. However, its intensity is gradually reduced, suggesting significant thermal quenching occurs.…”

“…As observed in Figure a, in the case of the bare WSe 2 , its PL undergoes a red-shift and thermal quenching as the temperature increases from −120 to 120 °C, which can be attributed to enhanced electron–phonon coupling and nonradiative recombination. The observation aligns with the temperature characteristics commonly observed in 2D semiconductors. , In the case of the TiOPc/WSe 2 , the emission peak position at 1.53 eV remains almost unchanged with the temperature increases from −120 to 120 °C. However, its intensity is gradually reduced, suggesting significant thermal quenching occurs.…”