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■ 외부초청 세미나

일시 : 2009. 3. 24(화), 16:00
연사 : Dr. 홍병희 (성균관대)
장소 : 응용공학동 1층 영상강의실
제목 : Synthesis and Applications of Large-Scale Graphene Films

Abstract:

Synthesis and Applications of
Large-Scale Graphene Films

Byung Hee Hong
Department of Chemistry and SKKU Advanced Institute of Nanotechnology

Problems associated with large-scale pattern growth of graphene constitute one of the main obstacles to using this material in device applications. Recently, macroscopic-scale graphene films were prepared by two-dimensional assembly of graphene sheets chemically derived from graphite crystals and graphene oxides. However, the sheet resistance of these films was found to be much larger than theoretically expected values. In this presentation, we introduce the direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers, and present two different methods of patterning the films and transferring them to arbitrary substrates. The transferred graphene films show very low sheet resistance of 280V per square, with 80 per cent optical transparency.
At low temperatures, the monolayers transferred to silicon dioxide substrates show electron mobility greater than 3,700cm2/Vs and exhibit the half-integer quantum Hall effect, implying that the quality of graphene grown by chemical vapour deposition is as high as mechanically cleaved graphene. Employing the outstanding mechanical properties of graphene, we also demonstrate the macroscopic use of these highly conducting and transparent electrodes in flexible, stretchable, foldable electronics.

List of Articles
번호 제목 날짜
41 KINC Seminar: Prof. Rodney S. Ruoff (The Univ. of Texas at Austin) 2010.05.17
40 KINC Seminar: Prof. Ryan C. Hayward (Univ. of Massachusetts, Amherst) 2010.05.17
39 KINC Seminar: Dr. Tae Hoon Kim (Micron Technology) 2010.05.07
38 KINC Seminar: Prof. Peter Nordlander (Rice Univ.) 2010.03.29
37 KINC Seminar: Dr. Seung Hyun Kang (KCC) 2010.03.29
36 KINC Seminar: Prof. Je Deok Kim (NIMS) 2010.02.05
35 KINC Seminar: Prof. Younan Xia (Washington Univ. at St. Louis) 2009.11.26
34 KINC Seminar: Dr. Won Hyuk Suh (Univ. of California, Berkeley) 2009.10.23
33 KINC Seminar: Prof. Ralph G. Nuzzo (University of Illinois Urbana Champaign) 2009.09.22
32 KINC Seminar: Prof. Rod Ruoff (The Univ. of Texas at Austin) file 2009.08.12
31 KI Symposium: Prof. Matthew Tirrell (UC, Berkely) file 2009.08.11
30 Seminar 안내-Prof. Raj Banerjee, 09.6.24 2009.06.15
29 Seminar 안내-Prof. Michiya Matsusaki, 09.6.16 2009.06.10
28 Seminar 안내-Mamadou S. Diallo, Ph.D., 09.6.3 2009.05.25
27 Seminar 안내-H. Grabert (FRIAS) & J. G. Korvink (FRIAS & IMTEK), 09.5.25 2009.05.18
26 Seminar 안내-Prof. Yuanbo Zhang (UC Berkeley), 09.3.31 2009.03.31
» Seminar 안내-홍병희 박사(성균관대), 09.3.24 2009.03.23
24 Seminar안내-박지용 박사 (아주대), 09.04.2 2009.03.23
23 [KINC Seminar] 나노융합산업 발전전략- 박기영 박사 (지식경제부 바이오나노과장) 2009.02.26
22 Seminar안내-김필립박사(Columbia Univ.), 08.12.10(수) 15시 2008.11.26
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