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

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...

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Detalles Bibliográficos
Autores principales: Ahn, Ho Seon, Jang, Ji-Wook, Seol, Minsu, Kim, Ji Min, Yun, Dong-Jin, Park, Chibeom, Kim, Hyungdae, Youn, Duck Hyun, Kim, Jae Young, Park, Gunyeop, Park, Su Cheong, Kim, Jin Man, Yu, Dong In, Yong, Kijung, Kim, Moo Hwan, Lee, Jae Sung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3590561/
https://www.ncbi.nlm.nih.gov/pubmed/23466511
http://dx.doi.org/10.1038/srep01396
Descripción
Sumario: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 Ω□(−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).

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