Cover Page June-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 6, Pages 417-420, June 2019
About Cover

The cover photo describes the graphical representation of a programmable microfluidic device for the capture and detection of a variety of cells and bacteria. Recently, the interest in microfluidic technology has progressed considerably since the last decade due to its advanced applications in many areas including protein biochemistry, cell culture, detection, and electromechanical systems.


Graphene micromesh for transparent conductive films application 

Ryousuke Ishikawa*, Hiroki Nishida, Hiro Fukushima, Sho Watanabe, Sohei Yamazaki, Gilgu Oh, Nozomu Tsuboi

Materials Science Program, Niigata University, 8050 Ikarashi 2-nocho, Nishi-ku, Niigata, 950-2181, Japan

Adv. Mater. Lett., 2019, 10 (6), pp 417-420

DOI: 10.5185/amlett.2019.2238

Publication Date (Web): Jan 14, 2019

E-mail: ishikawa@eng.niigata-u.ac.jp

Abstract

In order to improve the properties of the graphene transparent conductive film, we developed a process of O2 plasma patterning graphene using a metal mesh as an etching mask. The CVD growth conditions of high-quality multilayer graphene samples consisting of 400 layers or more were found using Ni foil, and the R sheet = 3.4 ± 0.6 Ω/sq. was achieved. The best performance of graphene micromesh based transparent conductive films so far was R sheet = 22.2 Ω/sq. at T = 47.1 ± 1.9 %. According to theoretical calculations based on the combined resistance of the two-dimensional resistance lattice circuit, a combined resistance of 46.8 Ω can be realized at T = 90%.

Keywords

Patterned graphene, plasma etching, micromesh, transparent conductive films, solar cells.

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