Modulating spin-valley relaxation in WSe2 with variable thickness VOPc layers DOI Open Access
Daphné Lubert‐Perquel, Byeong Wook Cho, Alan Phillips

et al.

Chemical Physics Reviews, Journal Year: 2024, Volume and Issue: 5(4)

Published: Dec. 1, 2024

Combining the synthetic tunability of molecular compounds with optical selection rules transition metal dichalcogenides (TMDCs) that derive from spin-valley coupling could provide interesting opportunities for readout quantum information. However, little is known about electronic and spin interactions at such interfaces influence on relaxation. In this work, vanadyl phthalocyanine (VOPc) layers are thermally evaporated WSe2 to explore effect layer thickness excited-state polarization. The thinnest supports an interfacial state which destroys polarization almost instantaneously, whereas a thicker results in longer-lived than monolayer alone. mechanism appears involve tightly bound species molecule/TMDC interface strengthens exchange largely avoided VOPc isolate electrons holes.

Language: Английский

Resonantly Enhanced Hybrid Wannier–Mott–Frenkel Excitons in Organic–Inorganic Van Der Waals Heterostructures DOI Open Access
Shaohua Fu, Jianwei Ding, Haifeng Lv

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Abstract Hybrid excitons formed via resonant hybridization in 2D material heterostructures feature both large optical and electrical dipoles, providing a promising platform for many‐body exciton physics correlated electronic states. However, hybrid at organic–inorganic interface combining the advantages of Wannier–Mott Frenkel remain elusive. Here, are reported copper phthalocyanine/molybdenum diselenide (CuPc/MoSe 2 ) heterostructure (HS) featuring strong molecular orientation dependence by low‐temperature photoluminescence absorption spectroscopy. The Wannier–Mott–Frenkel exhibit oscillator strength display signatures CuPc MoSe simultaneously through delocalized electrons. density functional theory (DFT) calculations further confirm between lowest unoccupied orbital (LUMO) conduction band minimum (CBM) . out‐of‐plane is employed to tune tailor results reveal CuPc/MoSe with tunability orientation, suggesting that HS constitutes such as condensation optoelectrical applications.

Language: Английский

Citations

1
Magnetic Proximity-Induced Colossal Valley Splitting in WTe2 for Room Temperature Valleytronics DOI
Ahsiur Rahman Nirjhar, Saquib Ahmed

ACS Applied Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

Language: Английский

Citations

0
Modulating spin-valley relaxation in WSe2 with variable thickness VOPc layers DOI Open Access
Daphné Lubert‐Perquel, Byeong Wook Cho, Alan Phillips

et al.

Chemical Physics Reviews, Journal Year: 2024, Volume and Issue: 5(4)

Published: Dec. 1, 2024

Combining the synthetic tunability of molecular compounds with optical selection rules transition metal dichalcogenides (TMDCs) that derive from spin-valley coupling could provide interesting opportunities for readout quantum information. However, little is known about electronic and spin interactions at such interfaces influence on relaxation. In this work, vanadyl phthalocyanine (VOPc) layers are thermally evaporated WSe2 to explore effect layer thickness excited-state polarization. The thinnest supports an interfacial state which destroys polarization almost instantaneously, whereas a thicker results in longer-lived than monolayer alone. mechanism appears involve tightly bound species molecule/TMDC interface strengthens exchange largely avoided VOPc isolate electrons holes.

Language: Английский

Citations

0