Photoluminescence and electroluminescence of ZnS:Cu nanocrystals in polymeric networks
Photoluminescence and electroluminescence of ZnS:Cu nanocrystals in polymeric networks
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聚合物网络中 ZnS:Cu 纳米晶体的光致发光和电致发光
DOI：
10.1063/1.118866
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发表时间：
1997-05-05
影响因子：
4
通讯作者：
Shen, JC
中科院分区：
文献类型：
--
作者：
Huang, JM;Yang, Y;Shen, JC
在聚合物网络中合成了 ZnS:Cu 纳米晶体。 X射线光电子能谱和原子吸收数据表明Zn和Cu离子质量含量分别约为8.2%和0.12%。通过紫外-可见光谱测量，ZnS:Cu纳米晶的粒径约为3.0 nm。由于量子尺寸效应，ZnS纳米晶的带隙能量约为4.2 eV。与ZnS的光致发光峰值在390 nm相比，由于Cu作为发光中心，ZnS:Cu/聚合物薄膜的光发射峰值在415 nm。 ZnS:Cu/聚合物也被用来制作发光二极管(LED)，作为LED的发光层，在室温下观察到电致发光的蓝光，其开启电压小于4V。(C)1997年美国物理研究所。
ZnS:Cu nanocrystals were synthesized in polymeric networks. X-ray photoemission spectroscopy and atomic absorption data show that the Zn and Cu ion mass contents were about 8.2% and 0.12%, respectively. The particle size of ZnS:Cu nanocrystals was about 3.0 nm, measured by UV-vis spectrum. Due to the quantum size effects, the band gap energy of ZnS nanocrystals was about 4.2 eV. Compared with the photoluminescence of ZnS which peaks at 390 nm, the photoemission of ZnS:Cu/polymer thin films was peaking at 415 nm because of Cu acting as luminescent centers. The ZnS:Cu/polymer was also used to fabricate Light-emitting diode (LED), as the emitting layer of LED, the blue light of electroluminescence was observed at room temperature, and its turn-on voltage was less than 4 V. (C) 1997 American Institute of Physics.