Intrinsic Photoluminescence Emission from Subdomained Graphene Quantum Dots
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- 作者：Hyewon Yoon ; Yun Hee Chang ; Sung Ho Song ; Eui-Sup Lee ; Sung Hwan Jin ; Chanae Park ; Jinsup Lee ; Bo Hyun Kim ; Hee Jae Kang ; Yong-Hyun Kim and Seokwoo Jeon
- 刊名：Advanced Materials
- 出版年：2016
- 出版时间：July 13, 2016
- 年：2016
- 卷：28
- 期：26
- 页码：5255-5261
- 全文大小：1774K
- ISSN：1521-4095
文摘
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.