Talapin Dmitri V, Rogach Andrey L, Kornowski Andreas, Haase Markus, Weller Horst
Institute of Physical Chemistry, University of Hamburg, Bundesstrasse 45, 20146 Hamburg, Germany.
Nano Lett. 2001 Apr;1(4):207-211. doi: 10.1021/nl0155126.
Highly monodisperse CdSe nanocrystals were prepared in a three-component hexadecylamine-trioctylphosphine oxide-trioctylphosphine (HDA-TOPO-TOP) mixture. This modification of the conventional organometallic synthesis of CdSe nanocrystals in TOPO-TOP provides much better control over growth dynamics, resulting in the absence of defocusing of the particle size distribution during growth. The room-temperature quantum efficiency of the band edge luminescence of CdSe nanocrystals can be improved to 40-60% by surface passivation with inorganic (ZnS) or organic (alkylamines) shells.
在十六胺-三辛基氧化膦-三辛基膦（HDA-TOPO-TOP）三元混合物中制备了高度单分散的CdSe纳米晶体。这种对TOPO-TOP中传统有机金属合成CdSe纳米晶体方法的改进，能更好地控制生长动力学，从而在生长过程中不会出现粒径分布的散焦现象。通过用无机（ZnS）或有机（烷基胺）壳层进行表面钝化，CdSe纳米晶体的带边发光在室温下的量子效率可提高到40% - 60%。
