Fabrication and characteristics of ZnS nanocrystals/polymer composite doped with tetraphenylbenzidine single layer structure light-emitting diode

The hexagonal ZnS nanocrystals were synthesized in polymer matrix. The ZnS polymer composite doped with tetraphenylbenzidine (TPB) as light-emitting layer was used to fabricate a single layer structure light-emitting diode which has a low turn on voltage such as 2.5 V. The electroluminescence spectr...

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Bibliographic Details
Published in:Applied physics letters 1996-07, Vol.69 (3), p.377-379
Main Authors: Yang, Yi, Xue, Shanhua, Liu, Shiyong, Huang, Jinman, Shen, Jiacong
Format: Article
Language:English
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Summary:The hexagonal ZnS nanocrystals were synthesized in polymer matrix. The ZnS polymer composite doped with tetraphenylbenzidine (TPB) as light-emitting layer was used to fabricate a single layer structure light-emitting diode which has a low turn on voltage such as 2.5 V. The electroluminescence spectrum was obtained at room temperature. Owing to the effect that TPB interacted with ZnS nanocrystal to form the luminescent center, the emission was peaking at 520 nm which shifts to the lower energy compared with that of ZnS, and the half-width of the emission was about 20 nm.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.118066