Anti-stokes exciton emission in tetrahedral nanocarbon

Exciton emission in tetrahedral carbon self‐organized and ring‐shaped quantum dots

“…This data may confirm interplay of some ASEElines and bands at 5.60-5.20 eV and below 5.00 eV (Fig. 2) to exciton transitions in the bulk of nt-C layers proposed in [26]. Verification of this suggestion needs further studies of cross-sectional nanostructure and spatial ASEE spectra distribution of nt-C layers which were up to 100 nm thick.…”

“…2 evidence for the importance of final state interactions and exciton nature of emission [26]. Diamond spectroscopy results [30] showed that doublet due to spinorbit coupling, asymmetric in shape the indirect exciton emission line (Egx-TO; 5.275 eV,5.268 eV) together with low intensity TA, LO-satellites and bound exciton doublet (Do; 5.368 eV, 5.356 eV) were within the positions of week, fine-structured 5.218 eV, 5.111 eV bands and 5.185 eV step (Fig.…”

“…New data on radiation annihilation of excitons in surface and bulk QDs, QRs and bulk fractal nanostructures have been gained from the ASEE-spectra dependences upon EL rise [26]. Figure 4a, b shows the emission spectra evolution of two layers under EL rise.…”

“…Figures 1a, b illustrate several regions AFM images of nt-C/Si (7084-212, (111)-plane) and nt-C/KCl (7035-12_9, (100) cleavage) layers [26].…”

“…At 100 mW pumping the finestructured 4.8339 eV and 4.7925 eV lines of 35 meV and 20 meV in half-width respectively dominate. Comprehensive description of spectra changes under pumping and energies of sub lines in the spectrum at 5-100 mW excitation of nt-C/KCl layer was presented in [26].…”