氧化锌纳米颗粒/聚甲基丙烯酸甲酯异质结及其紫外电致发光

Heterojunction of ZnO nanoparticle/PMMA and its ultraviolet electroluminescence.

作者信息

Gao Song, Zhao Su-Ling, Xu Zheng, Yang Yi-Fan, Liu Zhi-Min, Xie Xiao-Yi

出版信息

Opt Lett. 2014 May 1;39(9):2633-6. doi: 10.1364/OL.39.002633.

DOI:10.1364/OL.39.002633

Abstract

A ZnO nanoparticle layer was synthesized by the sol-gel method on ITO glass. Devices with a ZnO nanoparticle layer/polymethylmethacrylate (PMMA) heterojunction structure were then fabricated and the room temperature electroluminescence (EL) spectra were studied. Under DC bias, ultraviolet (UV) EL at 390 nm from the ZnO band edge emission was observed, and defect-related emission of ZnO at 600 and 760 nm were also detected. The EL mechanisms are discussed in terms of the carrier tunneling process.

摘要

通过溶胶-凝胶法在氧化铟锡（ITO）玻璃上合成了氧化锌（ZnO）纳米颗粒层。然后制备了具有ZnO纳米颗粒层/聚甲基丙烯酸甲酯（PMMA）异质结结构的器件，并研究了其室温电致发光（EL）光谱。在直流偏压下，观察到来自ZnO带边发射的390nm紫外（UV）EL，同时还检测到ZnO在600和760nm处与缺陷相关的发射。根据载流子隧穿过程对EL机制进行了讨论。