Self-assembled foam-like graphene networks formed through nucleate boiling.

ABSTRACT: Self-assembled foam-like graphene (SFG) structures were formed using a simple nucleate boiling method, which is governed by the dynamics of bubble generation and departure in the graphene colloid solution. The conductivity and sheet resistance of the calcined (400°C) SFG film were 11.8?S·cm(-1) and 91.2 ??(-1), respectively, and were comparable to those of graphene obtained by chemical vapor deposition (CVD) (~10?S·cm(-1)). The SFG structures can be directly formed on any substrate, including transparent conductive oxide (TCO) glasses, metals, bare glasses, and flexible polymers. As a potential application, SFG formed on fluorine-doped tin oxide (FTO) exhibited a slightly better overall efficiency (3.6%) than a conventional gold electrode (3.4%) as a cathode of quantum dot sensitized solar cells (QDSSCs).

SUBMITTER: Ahn HS 

PROVIDER: S-EPMC3590561 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature