期刊
ACS NANO
卷 3, 期 5, 页码 1063-1068出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn800790s
关键词
hybrid materials; quantum dot(s); light-emitting device(s)
类别
资金
- International Research Training Group
- DFG
- Korea Science and Engineering Foundation (KOSEF) [R17-2007-059-01000-0]
- NANO Systems Institute-National Core Research Program (NSI-NCRC) [R15-2003-032-02002-0]
- World Class University (WCU) [400-2008-0230]
- National Research Laboratory (NRL) [R0A-2008-000-201080]
- National Research Foundation of Korea [2007-0054923] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
To combine the optical properties of CdSe@ZnS quantum dots (QDs) with the electrical properties of semiconducting polymers, we prepared QD/polymer hybrids by grafting a block copolymer (BCP) containing thiol-anchoring moieties (poly(para-methyl triphenylamine-b-cysteamine acrylamide)) onto the surfaces of Us through the ligand exchange procedure. The prepared QD/polymer hybrids possess improved processability such as enhanced solubility in various organic solvents as well as the film formation properties along with the improved colloidal stability derived from the grafted polymer shells. We also demonstrated light-emitting diodes based on QD/polymer hybrids, exhibiting the improved device performance (i.e., 3-fold increase in the external quantum efficiency) compared with the devices prepared by pristine (unmodified) QDs.
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