The optical response of self-organized Ag-CdTe metal-semiconductor hybrid nanostructures: Change in interaction vs number density variation

Ultrafast carrier dynamics in Ag–CdTe hybrid nanostructure: non-radiative and radiative relaxations

“…Fig. 1 also shows the measured extinction spectrum of Ag-nCdTe hybrid colloids and is different from that of both of its constituent colloids 17 . The Ag-nCdTe hybrid has an increasing absorption strength towards UV regime similar to that of a bare CdTe QD colloid.…”

“…Thus, self-assembled Ag-nCdTe hybrid nanostructures of negatively charged CdTe QDs and Ag NPs are expected to form in the mixed colloid. Based on our previous study, at the mixing ratio of γ = 0.56, in the Ag-nCdTe hybrid, each of the Ag NP is completely surrounded by 32 CdTe QDs 17 .…”

Static and Ultrafast Optical Response of Two Ag Nanospheres Glued by a CdTe Quantum Dot

“…Nevertheless, the measured spectra can be used for gaining insight into the hybrid formation process. A self-organized growth of Ag-CdTe hybrid nanostructure is expected in the mixed sample because of the tendency of TGA to get attached on the surface of Ag NP [27,35,36]. As the TGA is already attached to the CdTe QD, these QDs are also brought in close proximity to the Ag NP [27,35,36].…”

“…The individual constituents of the hybrid nanostructure, citrate capped silver NPs and TGA capped CdTe QDs dispersed in water, were prepared separately by wet chemical methods [24][25][26]. The procedure followed for the preparation of this individual colloids has been reported earlier [27]. Ag-CdTe hybrid colloid, labeled H γ , is prepared by mixing V p , volume of Ag NP colloid and V d , volume of CdTe QD colloid.…”

“…Here the mixing ratio, γ, is defined as V p /V d . In the mixed solution the Ag-CdTe hybrid nanostructures are expected to form because of self-organized growth [17,[27][28][29]. A 1 kHz, 35 femtosecond oscillator-amplifier system was used for the transient transmission measurements in standard pump-probe geometry (Fig.…”