visible and ultraviolet spectra of inorganic solids/ band edge exciton spectrareflection spectrasemiconductorelectroreflectanceReflection spectra have been measured on semiconducting SmS, SmSe and SmTe single crystals at 2 K in the photon energy region of 3 6 eV. From a comparison of the spectra in ...
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 ...
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. A comparison of bulk and surface exciton lifetimes yields a room temperature surface recombination velocity of 2x10^3cm/s and an ...
We present a theoretical analysis of the band-edge exciton structure in nanometer-size crystallites of direct semiconductors with a cubic lattice structure or a hexagonal lattice structure which can be described within the framework of a quasicubic model. The lowest energy exciton, eightfold degenerate...
Layer-dependent exciton polarizability and the brightening of dark excitons in few-layer black phosphorus Article Open access 01 September 2023 The band-edge excitons observed in few-layer NiPS3 Article Open access 05 January 2021 A common optical approach to thickness optimization in polymer an...
Define Band width. Band width synonyms, Band width pronunciation, Band width translation, English dictionary definition of Band width. the range of frequencies or the measured amount of information that can be transmitted over a connection; also used as
57. This was first discovered by McGuigan et al. in a lightly Cu doped silicon substrate and reported to exhibit an isoelectronic bound exciton nature in the ground states55,56,57. However, the defect induced lattice distortion, as well as the photophysics and radiative dynamics of its bound...
After simple deformation of the single crystals at room temperature, the band-edge luminescence showed a dramatic change, originating from stacking disorder, in the peak wavelength. It changed from 215nm in a free exciton band to 227nm in a bound exciton band. This 227-nm bound exciton ...
Continuous‐wave and time‐resolved photoluminescence spectroscopies have been employed to study the band‐edge transitions in GaN epitaxial layers grown by plasma assisted molecular beam epitaxy. In addition to the neutral‐donor‐bound exciton transition (theI2line), a transition line at about 83 me...
Furthermore, our model relates the k values of the free exciton, bound exciton, and the free-to-bound transitions. The results are in excellent agreement with experimental data. 展开 关键词: III-V semiconductors II-VI semiconductors III-V and II-VI semiconductors ...