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Intrinsic Photoluminescence Emission from Subdomained Graphene Quantum Dots
Author(s) -
Yoon Hyewon,
Chang Yun Hee,
Song Sung Ho,
Lee EuiSup,
Jin Sung Hwan,
Park Chanae,
Lee Jinsup,
Kim Bo Hyun,
Kang Hee Jae,
Kim YongHyun,
Jeon Seokwoo
Publication year - 2016
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.201600616
Subject(s) - photoluminescence , graphene , quantum dot , materials science , carbon fibers , nanotechnology , optoelectronics , composite material , composite number
The photoluminescence (PL) origin of bright blue emission arising from intrinsic states in graphene quantum dots (GQDs) is investigated. The bright PL of intercalatively acquired GQDs is attributed to favorably formed subdomains composed of four to seven carbon hexagons. Random and harsh oxidation which hinders the energetically favorable formation of subdomains causes weak and redshifted PL.