Synthesis of Highly n-Type Graphene by Using an Ionic Liquid

Synthesis of Highly n-Type Graphene by Using an Ionic Liquid

n‐Type graphene: A new, easy, and cheap method to produce n‐type reduced graphene oxide was developed by synthesizing a partially reduced intermediate containing nitrogen (PrGO‐IL, see scheme) by treating graphene oxide (GO) with an ionic liquid (IL) at 160 °C followed by rapid thermal annealing (RT...

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Veröffentlicht in:Chemistry : a European journal 2012-09, Vol.18 (39), p.12207-12212
Hauptverfasser: Bhunia, Prasenjit, Hwang, Eunhee, Yoon, Yeoheung, Lee, Eunkyo, Seo, Sohyeon, Lee, Hyoyoung
Format: Artikel
Sprache:eng
Schlagworte:
Annealing
Chemistry
Dirac point
field effect transistor
Graphene
Ionic liquids
Level (quantity)
Oxides
semiconductors
Synthesis
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Zusammenfassung:n‐Type graphene: A new, easy, and cheap method to produce n‐type reduced graphene oxide was developed by synthesizing a partially reduced intermediate containing nitrogen (PrGO‐IL, see scheme) by treating graphene oxide (GO) with an ionic liquid (IL) at 160 °C followed by rapid thermal annealing (RTA) at temperatures ranging from 400 to 1000 °C. A high N‐doping level of 6 % was achieved and the N‐doped rGO exhibits n‐type behavior with a Dirac point at −38 V at 400 °C.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201201593