Highly luminescent monodisperse CdSe and CdSe/ZnS nanocrystals synthesized in a hexadecylamine-trioctylphosphine oxide-trioctylphospine mixture
Highly luminescent monodisperse CdSe and CdSe/ZnS nanocrystals synthesized in a hexadecylamine-trioctylphosphine oxide-trioctylphospine mixture
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DOI：
10.1021/nl0155126
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发表时间：
2001-04-01
期刊：
影响因子：
10.8
通讯作者：
Weller, H
中科院分区：
文献类型：
--
作者：
Talapin, DV;Rogach, AL;Weller, H
以十六烷基胺-三辛基氧化膦-三辛基膦（HDA-TOPO-TOP）三元混合物为原料，制备了高度单分散的CdSe纳米晶。在TOPO-TOP中使用纳米晶体的常规有机金属合成的这种修改提供了对生长动力学的更好的控制，导致在生长期间不存在粒度分布的散焦。用无机（ZnS）或有机（烷基胺）壳层进行表面钝化，可以将CdSe纳米晶体的带边发光的室温量子效率提高到40-60%。
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 Use 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.