Strong confinement of PbSe nanocrystals in phosphate glass

Experimental study of the size-dependent photoluminescence emission of CBD-grown PbSe nanocrystals on glass

“…According to the AFM analysis, the average size of the coalescence NCs is estimated to be around 28 nm. Moreover, to provide further quantitative information, the absorption-band shifting according to NCs size is plotted in figure S.2(b) [33]. As figure S.2 (see Supporting Information) shows, the absorption edge of NCs of ∼28 nm size is around 3.76 μm.…”

An optical and structural investigation into CdTe nanocrystals embedded into the tellurium lithium borophosphate glass matrix

“…The observed infrared bands for the doped and undoped glass samples are shown in Figure 3, and the peak assignments are given in Table 2 ν (Te-O-Te) bending modes in TeO 4 groups [16] ν (B-O-B) bending modes [17] Deformation mode of P-O − groups [18] ν (TeO 4 ) [19,20] ν (TeO 3 ) [21] ν (TeO 2 ) [22,23] νs(POP) [24] νas(POP) [24] v (BO 4 ) [25] νs (PO 3 ) (chain end groups) [26] and ν (P-O-) stretching modes [27][28][29] v (BO 4 ) [30] νas (PO 3 ) [26] Ionic B-O stretching νas(PO 2 ) ν(P=O)in and νas(PO 2 ) in [24] ν(P=O) and (v (BO3) (v (BO 3 ) [31,32] modified with doping by CdTe nanoparticles. In addition, the appearance of the (v P==O) and (v (BO 3 ) bands may indicate the absence of a cyclic structure in the glass, which is due to the growth of nanoparticles.…”

Growth and Characterization of Novel System of Nanoparticles Embedded in Phosphate Glass Matrix

“…To the best of our knowledge, CdTe nanocrystal embedded in sodium/lithium-mixed phosphate glass matrix has not been reported yet. Our nanoparticles doped sodium/lithiummixed phosphate glass matrix begun in 2008 [19] and 2009 [20], and we have studied the growth of CdSe and PbSe nanocrystals in this glass matrix through optical absorption, X-ray diffraction and infrared spectroscopy techniques. In this work, it is intended to study the growth of CdTe quantum dots in P 2 O 5 -Na 2 O-Li 2 O and P 2 O 5 -Na 2 O-ZnO-Li 2 O glass matrices.…”