Polarized Light Emitting Diode by Long-Range Nanorod Self-Assembling on a Water Surface

被引:120
作者
Rizzo, Aurora [1 ]
Nobile, Concetta [1 ]
Mazzeo, Marco [1 ]
De Giorgi, Milena [1 ]
Fiore, Angela [1 ]
Carbone, Luigi [1 ]
Cingolani, Roberto [1 ]
Manna, Liberato [1 ]
Gigli, Giuseppe [1 ]
机构
[1] Univ Salento, Dipartimento Ingn Innovaz, Distretto Tecnol ISUFI, INFM,CNR,Natl Nanotechnol Lab,NNL, I-73100 Lecce, Italy
关键词
nanorod self-assembly; nanorod alignment; nanorod LEDs; imprinting; polarized emission; QUANTUM-DOT MONOLAYER; ELECTRIC-FIELD; LIQUID-CRYSTALS; SOLAR-CELLS; LARGE-AREA; DEVICES; CDSE; ELECTROLUMINESCENCE; SUPERSTRUCTURES; SUPERLATTICES;
D O I
10.1021/nn900063m
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We demonstrate a straightforward strategy to fabricate a multilayer inorganic/organic polarized light-emitting diode device based on highly ordered arrays of rod-shaped nanocrystals as the active species. We have developed a simple and effective method that allows colloidal CdSe/CdS core/shell nanorods to be laterally aligned in smectic or nematic phases on the surface of water. A floating film of such ordered nanorods has been collected by a poly(dimethylsiloxane) (PDMS) stamp pad and transferred by contact printing onto previously evaporated organic layers. Thanks to the lateral nanorod alignment the as-prepared film exhibited strong polarized photoluminescence and it has been used as emissive layer in the polarized electroluminescent device.
引用
收藏
页码:1506 / 1512
页数:7
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