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Characterization of Quantum Dot/Conducting Polymer Hybrid Films and Their Application to Light‐Emitting Diodes
Author(s) -
Kwak Jeonghun,
Bae Wan Ki,
Zorn Matthias,
Woo Heeje,
Yoon Hyunsik,
Lim Jaehoon,
Kang Sang Wook,
Weber Stefan,
Butt HansJürgen,
Zentel Rudolf,
Lee Seonghoon,
Char Kookheon,
Lee Changhee
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200902072
Subject(s) - materials science , electroluminescence , quantum dot , light emitting diode , optoelectronics , diode , polymer , characterization (materials science) , nanotechnology , quantum efficiency , composite material , layer (electronics)
Quantum dot/conducting polymer hybrid films are used to prepare light‐emitting diodes (LEDs). The hybrid films (CdSe@ZnS quantum dots excellently dispersed in a conducting polymer matrix, see figure) are readily prepared by various solution‐based processes and are also easily micropatterned. The LEDs exhibit a turn‐on voltage of 4 V, an external quantum efficiency greater than 1.5%, and almost pure‐green quantum‐dot electroluminescence.