发光学报2012，Vol.33Issue(2)：171-175,5.DOI:10.3788/fgxb20123302.0171
ZnSe(ZnS)纳米晶与MEH-PPV的共掺有机电致发光器件
Organic Electroluminescence of ZnSe/ZnS Nanocrystal Hybrid with MEH-PPV
摘要
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 (styrenesul-fonate) ( 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.关键词
ZnSe/ZnS/纳米晶/MEH-PPV/电致发光Key words
ZnSe/ZnS/ nanocrystal/ MEH-PPV/ electroluminescence分类
信息技术与安全科学引用本文复制引用
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):171-175,5.基金项目
国家自然科学基金(60977027) （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 （2011YJS280）
