Abstract
We report on our terahertz and optical study of monolayer graphene grown by chemical vapor deposition and processed by plasma oxidation. The plasma oxidation induces oxygen-related defects, and the resulting disorder increases the sheet resistance of graphene as measured via terahertz spectroscopy. The excitonic absorption peak weakens considerably and blue shifts upon plasma oxidation, resulting in higher transmittance in both the visible and ultraviolet regions. Our oxygen plasma-treated graphene also exhibits a free-carrier doping effect as confirmed by the blue shift of the Raman G band.
| Original language | English |
|---|---|
| Article number | 131901 |
| Journal | Applied Physics Letters |
| Volume | 102 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 2013 Apr 1 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
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Terahertz and optical study of monolayer graphene processed by plasma oxidation. / Choi, Kyujin; Lim, Juhwan; Rani, J. R.; Seo Yoon, Hyong; Oh, Juyeong; Hong, Taeyoon; Ha, Taewoo; Cheol Park, Byung; Ik Sim, Kyung; Chan Jun, Seong; Hoon Kim, Jae.
In: Applied Physics Letters, Vol. 102, No. 13, 131901, 01.04.2013.Research output: Contribution to journal › Article
TY - JOUR
T1 - Terahertz and optical study of monolayer graphene processed by plasma oxidation
AU - Choi, Kyujin
AU - Lim, Juhwan
AU - Rani, J. R.
AU - Seo Yoon, Hyong
AU - Oh, Juyeong
AU - Hong, Taeyoon
AU - Ha, Taewoo
AU - Cheol Park, Byung
AU - Ik Sim, Kyung
AU - Chan Jun, Seong
AU - Hoon Kim, Jae
PY - 2013/4/1
Y1 - 2013/4/1
N2 - We report on our terahertz and optical study of monolayer graphene grown by chemical vapor deposition and processed by plasma oxidation. The plasma oxidation induces oxygen-related defects, and the resulting disorder increases the sheet resistance of graphene as measured via terahertz spectroscopy. The excitonic absorption peak weakens considerably and blue shifts upon plasma oxidation, resulting in higher transmittance in both the visible and ultraviolet regions. Our oxygen plasma-treated graphene also exhibits a free-carrier doping effect as confirmed by the blue shift of the Raman G band.
AB - We report on our terahertz and optical study of monolayer graphene grown by chemical vapor deposition and processed by plasma oxidation. The plasma oxidation induces oxygen-related defects, and the resulting disorder increases the sheet resistance of graphene as measured via terahertz spectroscopy. The excitonic absorption peak weakens considerably and blue shifts upon plasma oxidation, resulting in higher transmittance in both the visible and ultraviolet regions. Our oxygen plasma-treated graphene also exhibits a free-carrier doping effect as confirmed by the blue shift of the Raman G band.
UR - http://www.scopus.com/inward/record.url?scp=84876158567&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84876158567&partnerID=8YFLogxK
U2 - 10.1063/1.4795526
DO - 10.1063/1.4795526
M3 - Article
AN - SCOPUS:84876158567
VL - 102
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 13
M1 - 131901
ER -