Enhanced Red-Light Emission by Local Plasmon Coupling of Au Nanorods in an Organic Light-Emitting Diode
Enhanced Red-Light Emission by Local Plasmon Coupling of Au Nanorods in an Organic Light-Emitting Diode
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DOI：
10.1143/apex.4.032105
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发表时间：
2011-03
影响因子：
2.3
通讯作者：
T. Tanaka;Yuji Totoki;A. Fujiki;N. Zettsu;Y. Miyake;M. Akai‐Kasaya;A. Saito;T. Ogawa;Y. Kuwaha
中科院分区：
文献类型：
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作者：
T. Tanaka;Yuji Totoki;A. Fujiki;N. Zettsu;Y. Miyake;M. Akai‐Kasaya;A. Saito;T. Ogawa;Y. Kuwaha
通过与嵌入在衬底阳极上的长度为50-60 nm的Au纳米棒的局域表面等离子体耦合，显著提高了有机红色发光二极管的量子效率。我们用4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran(DCM)掺杂的三(8-羟基喹啉)铝(III)(Alq3)作为发光层。该二极管结构由ITO阳极、CuPc空穴传输层、Alq3电子传输层、LiF电子注入层和Al阴极组成。我们观察到与传统二极管结构相比，分子荧光强度增加了3倍。
A significant increase in the quantum efficiency of an organic red-light-emitting diode was achieved through coupling with localized surface plasmons of Au nanorods with a length of 50–60 nm embedded on the substrate anode. We used 4-(dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran (DCM)-doped tris(8-hydroxylquinolianato)aluminum(III) (Alq3) as an emission layer. The fabricated diode structure consists of an indium tin oxide (ITO) anode, a Cu phthalocyanine (CuPc) hole transport layer, an Alq3 electron transport layer, a LiF electron injection layer, and an Al cathode. We observed a 3-fold increase in the intensity of molecular fluorescence compared with that of a conventional diode structure.