This communication describes a facile and mild chemical etching method for resizing of CdTe nanocrystals, which provides a possible approach for tailoring the size-dependent properties of the nanocrystals.

It is shown that high-frequency electron paramagnetic resonance (EPR) and electron-nuclear double resonance (ENDOR) spectroscopy are excellent tools for the investigation of the electronic properties of semiconductor quantum dots (QDs). The great attractions of these techniques are that, in contrast to optical methods, they allow the identification of the dopants and provide information about t...

Semiconductor nanocrystals have the potential for a range of applications in optoelectronics and nonlinear optics. As the surface-to-volume ratio increases, surface emission processes become more important. Using infrared (IR) and photoluminescence (PL) spectroscopy, we have developed a unified model for the acceptor and intragap surface states of ZnO nanocrystals. A PL peak was observed at 2.9...

Mass transfer during the reaction process is limited in industrial biodiesel manufacture. Therefore, to overcome this problem, a reactor from castor oil transesterified using ZnO nanocatalyst was designed. can be used as catalyst for production due nature of which has high catalytic activity, low material costs and environmentally friendly. This study aims design manufacture zinc oxide (ZnO) na...

Abstract Zinc blende ZnO nanocrystals (NCs) were synthesised in amorphous silica by high-fluence dual (Zn, O) ion implantation and subsequent thermal annealing air. We observed the formation of core/shell nanoparticles at depth maximum Zn concentration as a result an incomplete oxidation process. The matrix with NCs exhibits intense white-greenish emission. Low-temperature photoluminescence spe...

ZnO films prepared on glass substrates at T = 80 °C ± 3 using the chemical bath deposition technical. The precursor solutions was KOH (0.5 M), NH4NO3 (1.5 M) three different Zn(NO3)2 (0.2 M, 0.3 0.4 concentration. morphology is investigated by Scanning Electron Microscopy (SEM) and images shows porous matrix with cavities of size, javelin tretrap. According to XRD diffractograms, all nanocrysta...