Band-edge excitons of few-layer nickel phosphorous trisulfide (NiPS) are characterized via micro-thermal-modulated reflectance (μTR) measurements from 10 to 300K. Prominent μTR features of the A exciton series and B are simultaneously detected near the band edge of NiPS. The A exciton series ...
As a consequence of the dielectric and quantum confinement effect, they show strongly bound and stable excitons at room temperature. In this report, the band-edge exciton fine structure and in particular its exciton and biexciton dynamics in high quality crystals of (PEA)2PbI4 are investigated....
Mixing of the dark and bright excitons in an external magnetic field allows the direct optical recombination of the dark exciton ground state. The observed shortening of the luminescence decay time in CdSe nanoncrystals in a magnetic field is also in excellent agreement with the theory, giving ...
Layers with different relative strain show well resolved peaks due to the recombination of excitons at neutral donors (D 0 ,X) and acceptors (A 0 ,X), as well as from free-to-bound transitions due to donors (D 0 ,h) and acceptors (e,A 0 ). The deepest emission (e,A 0 ) ...
Electric-field-induced second harmonic generation (EFISH), a third-order nonlinear process, arises from the interaction between the electric field of an external bias and that of two incident photons. EFISH can be used to dynamically control the nonlinea
These decreased nonradiative recombination of the excitons significantly and thus led to the unexpectedly high QYs.doi:10.1007/s11051-011-0273-7Yeon-Su ParkYukihiro OkamotoNoritada KajiManabu TokeshiYoshinobu BabaSpringer NetherlandsJournal of Nanoparticle Research...
S. Simple screened hydrogen model of excitons in two-dimensional materials. Phys. Rev. Lett. 116, 056401 (2016). Article Google Scholar Qiu, H. et al. Hopping transport through defect-induced localized states in molybdenum disulphide. Nat. Commun. 4, 2642 (2013). Article Google Scholar ...
展开 关键词: dispersion relations excitons nanophotonics nanowires photonic crystals quantum dots quantum entanglement quantum optics superradiance surface plasmon resonance DOI: 10.1103/PhysRevA.79.033815 被引量: 75 年份: 2009 收藏 引用 批量引用 报错 分享 全部...
We report the first well-resolved band-edge luminescence from excitons confined in fully strained SiGe quantum wells grown on Si. At liquid-He temperatures the photoluminescence is due to shallow bound excitons, and in addition to a no-phonon line, phonon-assisted transitions involving TA phonons ...
excitonsgallium compoundsIII-V semiconductorsimpurity distributionimpurity electron statesluminescence of inorganic solidssegregationIn this study a comparison between GaP layers, grown by metalorganic vapour phase epitaxy on either (111) oriented GaP substrates or (001) oriented GaP substrates, is made ...