Intrinsic Photoluminescence Emission from Subdomained Graphene Quantum Dots. Issue 26 (6th May 2016)

• Record Type: Journal Article
• Authors: Yoon, Hyewon; Chang, Yun Hee; Song, Sung Ho; Lee, Eui‐Sup; Jin, Sung Hwan; Park, Chanae; Lee, Jinsup; Kim, Bo Hyun; Kang, Hee Jae; Kim, Yong‐Hyun; Jeon, Seokwoo
• Is Part Of: Advanced materials. Volume 28:Issue 26(2016)
• Page Start: 5255
• Page End: 5261
• Publication Date: 2016-05-06
• Subjects: band gap -- graphene quantum dots -- intrinsic photoluminescence -- luminescence mechanism -- subdomains; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201600616
• Languages: English
• ISSNs: 0935-9648

Abstract

Abstract : 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.