Thermoluminescence and absorption spectra of CdSe quantum dot-doped glass irradiated by X-rays

Photo- and Thermally Stimulated Luminescence Spectra of CdS1 – xSex Nanocrystals Embedded in Borosilicate Glass

“…It is worth mentioning that we could not observe any clear dependence of the TSL peak temperature on the CdS1 -xSex nanocrystal size and composition. The only sample with CdSe nanocrystals with d  4.4 nm exhibits the maximum TSL temperature near 380 K while all other samples under study show the maximal TSL near 360-370 K. Note that our data do not match those of Dekanozishvili et al who observe a TSL peak near 420 K for glass-embedded CdSe nanocrystals [22] as well those of Miyoshi et al where a much higher value (470 K) is reported for glass-embedded CdS nanocrystals [20]. At present, we cannot find an unambiguous explanation for this discrepancy which can be related, in particular, to the differences in the nanocrystal size and composition as well as in the glass matrix.…”

“…Thermally stimulated luminescence (TSL) studies provide additional information regarding radiative recombination centres in the semiconductor nanocrystals and at their interface with the host matrix. To our knowledge, only few experimental studies of TSL of glass-embedded II-VI nanocrystals were reported so far [20][21][22].…”

Simulation of MeV electron energy deposition in CdS quantum dots absorbed in silicate glass for radiation dosimetry

“…Recent studies have investigated the change in the optical response of quantum-dots contained in glass matrices as a function of the absorbed ionizing radiation dose. A variety of different techniques have been exploited, for example change in optical absorption [1], change in thermoluminescence [2] and, for quantum-dots in a liquid environment, the change in the optical-stimulated fluorescent yield [3].…”

Photoluminescence of X‐ray irradiated CdSe nanocrystals embedded in dielectric matrices

“…On the other hand, irradiation with light and X‐rays is reported to increase thermoluminescence of glass‐embedded CdSe and CdS 1− x Se x nanocrystals. However, as in the above papers only the integrated thermoluminescence intensity is analyzed, these data can hardly be directly compared to ours since, as follows from our earlier study of PL and thermoluminescence of glass‐embedded CdS 1− x Se x nanocrystals , these two processes can appear in different spectral ranges and be governed by different mechanisms.…”