TY - JOUR
T1 - Electron beam-induced formation of crystalline nanoparticle chains from amorphous cadmium hydroxide nanofibers
AU - Stoychev, Georgi V.
AU - Okhrimenko, Denis
AU - Appelhans, Dietmar
AU - Voit, Brigitte
PY - 2016/1/1
Y1 - 2016/1/1
N2 - Quantum dots (QDs) and especially quantum dot arrays have been attracting tremendous attention due to their potential applications in various high-tech devices, including QD lasers, solar cells, single photon emitters, QD memories, etc. Here, a dendrimer-based approach for the controlled synthesis of ultra-thin amorphous cadmium hydroxide nanofibers was developed. The fragmentation of the obtained nanofibers in crystalline nanoparticle chains under the irradiation with electron beam was observed in both ambient and cryo-conditions. Based on the experimental results, a model for the formation of amorphous nanofibers, as well as their transformation in crystalline nanoparticle chains is proposed. We foresee that these properties of the nanofibers, combined with the possibility to convert cadmium hydroxide into CdX (X. =O, S, Se, Te), could result in a new method for the preparation of 2D and 3D QDs-arrays with numerous potential applications in high performance devices.
AB - Quantum dots (QDs) and especially quantum dot arrays have been attracting tremendous attention due to their potential applications in various high-tech devices, including QD lasers, solar cells, single photon emitters, QD memories, etc. Here, a dendrimer-based approach for the controlled synthesis of ultra-thin amorphous cadmium hydroxide nanofibers was developed. The fragmentation of the obtained nanofibers in crystalline nanoparticle chains under the irradiation with electron beam was observed in both ambient and cryo-conditions. Based on the experimental results, a model for the formation of amorphous nanofibers, as well as their transformation in crystalline nanoparticle chains is proposed. We foresee that these properties of the nanofibers, combined with the possibility to convert cadmium hydroxide into CdX (X. =O, S, Se, Te), could result in a new method for the preparation of 2D and 3D QDs-arrays with numerous potential applications in high performance devices.
KW - cryoTEM
U2 - 10.1016/j.jcis.2015.09.023
DO - 10.1016/j.jcis.2015.09.023
M3 - Journal article
C2 - 26397918
SN - 0021-9797
VL - 461
SP - 122
EP - 127
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
ER -