High performance metal microstructure for carbon-based transparent conducting electrodes

A. Kasry, M. El Ashry, R.A. Nistor, A.A. Bol, G.S. Tulevski, G.J. Martyna, D.M. Newns

Research output: Contribution to journalArticleAcademicpeer-review

13 Citations (Scopus)

Abstract

In this work, a metal busbar microstructure is introduced to decrease the effective sheet resistance of both graphene and carbon nanotube films to a value suitable for use as transparent conducting electrodes (TCEs). The proposed busbar architecture, implemented with Cu, theoretically can reduce the sheet resistance by a factor of 1000, while yet limiting the optical absorption to 4%. Experimental sheet resistance and optical transparency data are presented for two metals with differing contact resistance (Pd and Cu) and for mono- and multi-layer graphene as well as nanotube films. It is found that the metal busbar microstructure decreases the sheet resistance by a factor of 8 and 70 on graphene and nanotube films respectively, a sufficient resistance reduction to enable utilization as a TCE. The contact resistance between the metal grid and carbon film is believed to limit the ultimate performance. The metal busbar microstructure provides a viable route to the use of carbon films in photovoltaic and display applications.
Original languageEnglish
Pages (from-to)4827-4830
JournalThin Solid Films
Volume520
Issue number15
DOIs
Publication statusPublished - 2012
Externally publishedYes

Fingerprint Dive into the research topics of 'High performance metal microstructure for carbon-based transparent conducting electrodes'. Together they form a unique fingerprint.

Cite this