Journal
ADVANCED OPTICAL MATERIALS
Volume 2, Issue 11, Pages 1016-1023Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201400184
Keywords
graphene quantum dots; light emitting diodes; graphite intercalation compounds; luminescence mechanisms; graphene
Categories
Funding
- Converging Research Center Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [2013K000175]
- Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Education, Science and Technology, Korea [2011-0031630]
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2007-0056090]
- GRC project of KI for the NanoCentury
- Ministry of Science, ICT & Future Planning, Republic of Korea [KINC01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2007-0056090, 22A20130000071, 2013M3A6A5073173] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Graphene quantum dot (GQD) light-emitting diodes (GQD-LEDs) are shown to have an electroluminescence exceeding 1000 cd m(-2). These devices are possible due to a novel synthesis method to create GQDs with minimal oxidation, guaranteeing high quantum yields via the solvothermal formation of graphite intercalation compounds between graphite powder and sodium potassium tartrate. The GQDs are incorporated into polymeric host layers in a multilayer device and irradiate blue (similar to 400 nm) emission.
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