However, The PL peak at 565 nm from nanocrystals is not exhibited before neutron irradiation due to the quenching of the GeO4 tetrahedra, instead of GeO2 due to Ge insufficiency. A Raman peak position 262 cm−1 corresponding to GeO4 tetrahedra, was formed after ion-implantation and ...
The peak position of all components moves to longer wavelengths upon increasing the ion fluence. This short-wavelength emission seems to be related to the presence of extended defects acting as precursors of nanocrystals. A slower (microsecond) component, centered in the near infrared and attributed...
The position and linewidth of the crystalline-Ge Raman peak found approximately 300 cm−1 after annealing at 550 °C remain almost unchanged by further increasing the annealing temperature up to 1100 °C. The annealing behaviours of Raman peaks including the extra 229, 435/485 cm−1 ones, ...
The shape and structure of the profile, peak position of the resonant absorption, and structure of its red wing are subject of numerous reports [13, 15]. In short, the nature of the effects lies in the electronic structure of the Au NPs in which the intra- and interband transitions are...
Interestingly, the Raman peaks of TAC in TAC@SiO2@Al2O3 appear blue shift and move to a position with higher Raman shift, which will be caused by the high bond energy of the Si–O and Al–O bonds [38]. For TAC@SiO2, there are roughly five Raman shifts in the Raman peak ...
In this figure, the experimental results obtained by these authors for band gap, as obtained from photoluminescence excitation measurement and photoluminescence peak position, are contrasted and agree well with the behaviors theoretically calculated by Delerue et al. [26], Wang and Zunger [31], and...
(a)confirms the crystalline GO as prepared by Hummer’s method. The broad peak 2θ at 24oshows the reduced form of GO after refluxing, as shown in Fig.1. The observed RGO diffraction peaks can be attributed to the 002 plane due to the partial removal of oxygen functionalities from the...
et al. Nanohybrids of magnetically intercalated optical metamaterials for magnetic resonance/raman imaging and in situ chemodynamic/photothermal therapy. ACS Appl. Bio. Mater. 4, 5742–5752. https://doi.org/10.1021/acsabm.1c00510 (2021). 43. Tanhaei, M., Mahjoub...
The SiC starting material was checked for equimolar stoichiometry by electron microscopy (Table S6 and Figure S7) and Raman spectroscopy (Figure S8; Ferrari & Robertson, 2000; Mitra et al., 1969; Olego et al., 1982). Mixtures were prepared in molar ratios of 1:1, 10:1, and 50:1 SiC...
The peak position of this diffuse feature does not change as pressure decreases. Fig. 2 Multiplot of XRD data. Stishovite peaks are labeled at the top; ambient condition positions (gray dashed lines). Traces are clustered according to maximum applied pressure with time delays listed on shock-...