期刊
NANO LETTERS
卷 8, 期 12, 页码 4513-4517出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl8025218
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类别
资金
- NSF-MRSEC program
- PECASE
- MIT Institute for Soldier Nanotechnolouies
- DMR
- MIT MRSEC Shared Facilities
- National Science Foundation
We demonstrate a solvent-free contact printing process for deposition of patterned and unpatterned colloidal quantum dot (QD) thin films as the electroluminescent layers within hybrid organic-QD light-emitting devices (OD-LEDs). Our method benefits from the simplicity, low cost, and high throughput of solution-processing methods, while eliminating exposure of device structures to solvents. Because the charge transport layers in hybrid organic/inorganic OD-LEDs consist of solvent-sensitive organic thin films, the ability to avoid solvent exposure during device growth, as presented in this study, provides a new flexibility in choosing organic materials for improved device performance. In addition, our method allows us to fabricate both monochrome and red-green-blue patterned electroluminescent structures with 25,mu m critical dimension, corresponding to 1000 ppi (pixels-per-inch) print resolution.
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