PMID- 22928753 OWN - NLM STAT- MEDLINE DCOM- 20130208 LR - 20120925 IS - 1936-086X (Electronic) IS - 1936-0851 (Linking) VI - 6 IP - 9 DP - 2012 Sep 25 TI - A facile route to recover intrinsic graphene over large scale. PG - 7781-8 AB - The intrinsic properties of initially p-type doped graphene (grown by chemical vapor deposition (CVD)) can be recovered by buffered oxide etch (BOE) treatment, and the dominant factor governing p-type doping is identified as the H(2)O/O(2) redox system. Semi-ionic C-F bonding prevents the reaction between the products of the H(2)O/O(2) redox system and graphene. BOE-treated graphene field effect transistors (FETs) subsequently exposed to air, became p-type doped due to recovery of the H(2)O/O(2) redox system. In comparison, poly(methyl methacrylate) (PMMA)-coated graphene FETs had improved stability for maintaining the intrinsic graphene electronic properties. FAU - Shin, Dong-Wook AU - Shin DW AD - SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, 300 Chunchun-dong, Jangan-gu, Suwon 440746, Republic of Korea. FAU - Lee, Hyun Myoung AU - Lee HM FAU - Yu, Seong Man AU - Yu SM FAU - Lim, Kwang-Soo AU - Lim KS FAU - Jung, Jae Hoon AU - Jung JH FAU - Kim, Min-Kyu AU - Kim MK FAU - Kim, Sang-Woo AU - Kim SW FAU - Han, Jae-Hee AU - Han JH FAU - Ruoff, Rodney S AU - Ruoff RS FAU - Yoo, Ji-Beom AU - Yoo JB LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20120905 PL - United States TA - ACS Nano JT - ACS nano JID - 101313589 RN - 0 (Oxides) RN - 7782-42-5 (Graphite) SB - IM MH - Electric Conductivity MH - Graphite/*chemistry/*isolation & purification MH - Materials Testing MH - Nanostructures/*chemistry/*ultrastructure MH - Oxides/*chemistry MH - Particle Size EDAT- 2012/08/30 06:00 MHDA- 2013/02/09 06:00 CRDT- 2012/08/30 06:00 PHST- 2012/08/30 06:00 [entrez] PHST- 2012/08/30 06:00 [pubmed] PHST- 2013/02/09 06:00 [medline] AID - 10.1021/nn3017603 [doi] PST - ppublish SO - ACS Nano. 2012 Sep 25;6(9):7781-8. doi: 10.1021/nn3017603. Epub 2012 Sep 5.