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ZnSe(ZnS)纳米晶与MEH-PPV的共掺有机电致发光器件
引用本文:殷月红,邓振波,伦建超,吕昭月,杜海亮,王永生.ZnSe(ZnS)纳米晶与MEH-PPV的共掺有机电致发光器件[J].发光学报,2012,33(2):171-175.
作者姓名:殷月红  邓振波  伦建超  吕昭月  杜海亮  王永生
作者单位:北京交通大学光电子技术研究所 发光与光信息技术教育部重点实验室, 北京 100044
基金项目:国家自然科学基金(60977027);北京交通大学优秀博士研究生创新研究基金(2011YJS280)资助项目
摘    要:采用水相法合成核壳结构ZnSe/ZnS 纳米晶,经X射线衍射(XRD)分析和透射电子显微镜(TEM)表征,证实所制备的样品为立方晶型闪锌矿结构ZnSe/ZnS量子点。按照一定的质量比将ZnSe/ZnS 纳米晶和有机聚合物MEH-PPV(poly ) 共掺并将其作为发光层,分别制备单层和多层有机电致发光器件,结构为ITO/MEH-PPV∶ZnSe(ZnS)(50 nm)/Al和 ITO/PEDOT∶PSS(70 nm)/ MEH-PPV∶ZnSe(ZnS)(50 nm)/BCP(15 nm)/Alq3(12 nm) /LiF(0.5 nm)/Al。实验结果表明,多层发光器件的发光特性与单层器件不同,工作电压的增大使其发光峰发生了明显的蓝移。

关 键 词:ZnSe/ZnS  纳米晶  MEH-PPV  电致发光
收稿时间:2011/8/25

Organic Electroluminescence of ZnSe/ZnS Nanocrystal Hybrid with MEH-PPV
YIN Yue-hong,DENG Zhen-bo,LUN Jian-chao,LV Zhao-yue,DU Hai-liang,WANG Yong-sheng.Organic Electroluminescence of ZnSe/ZnS Nanocrystal Hybrid with MEH-PPV[J].Chinese Journal of Luminescence,2012,33(2):171-175.
Authors:YIN Yue-hong  DENG Zhen-bo  LUN Jian-chao  LV Zhao-yue  DU Hai-liang  WANG Yong-sheng
Institution:Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, China
Abstract:Core-shell structure ZnSe/ZnS nanocrystal(NCs) with size of about 4 nm was synthesized in aqueous solution,Good cubic crystal with zinc-blend structure of ZnSe/ZnS NCs was confirmed by using X-ray diffraction(XRD) and transmission electron microscopy(TEM) technology.A surfactant was replaced of ZnSe/ZnS NCs to transfer from aqueous solution to organic solution,which have been great dispersed in organic polymer.Organic light emitting devices were fabricated using a thin film which was spin-coated the MEH-PPV and ZnSe/ZnS NCs mixer solution under the quality ratio of 1∶0.5 as the emitting layer.The electroluminescence(EL) diodes with single-layer structure of ITO/poly 2-methoxy-5-(2′-ethyl hexyloxy-p-phenylenevinylene)](MEH-PPV)∶ZnSe/ZnS(50 nm)/Al and a multilayer structure of ITO/poly(ethylene-dioxythio phene)∶poly(styrenesulfonate)(PEDOT∶PSS)(70 nm)/MEH-PPV∶ZnSe(ZnS)(50 nm)/bathocuproine(BCP)(15 nm)/tris-(8-hydroxylquinoline)-aluminum(Alq3)(12 nm)/LiF(0.5 nm)/Al were fabricated,respectively.The clearly blue shift of the emissive peak in the multilayer device was measured with the increasing of applied voltage,but there is not the changing of the emissive peak in the single-layer device.Under the effect of applied voltage and the hole blocking layer BCP,EL of multilayer device may be from MEH-PPV and ZnSe/ZnS NCs.
Keywords:ZnSe/ZnS  nanocrystal  MEH-PPV  electroluminescence
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