Abstract
Graphitic nanomaterials such as graphene, carbon nanotubes (CNT), and C 60 fullerenes are promising materials for energy applications because of their extraordinary electrical and optical properties. However, graphitic materials are not readily dispersible in water. Strategies to fabricate all-carbon nanocomposites typically involve covalent linking or surface functionalization, which breaks the conjugated electronic networks or contaminates functional carbon surfaces. Here, we demonstrate a facile surfactant-free strategy to create such all-carbon composites. Fullerenes, unfunctionalized single walled carbon nanotubes, and graphene oxide sheets can be conveniently co-assembled in water, resulting in a stable colloidal dispersion amenable to thin film processing. The thin film composite can be made conductive by mild thermal heating. Photovoltaic devices fabricated using the all-carbon composite as the active layer demonstrated an on-off ratio of nearly 10 6, an open circuit voltage of 0.59V, and a power conversion efficiency of 0.21%. This photoconductive and photovoltaic response is unprecedented among all-carbon based materials. Therefore, this surfactant-free, aqueous based approach to making all-carbon composites is promising for applications in optoelectronic devices.
| Original language | English |
|---|---|
| Title of host publication | Materials Research Society Symposium Proceedings |
| Pages | 67-73 |
| Number of pages | 7 |
| Volume | 1344 |
| DOIs | |
| Publication status | Published - 2012 |
| Event | 2011 MRS Spring Meeting - San Francisco, CA, United States Duration: Apr 25 2011 → Apr 29 2011 |
Other
| Other | 2011 MRS Spring Meeting |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 4/25/11 → 4/29/11 |
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ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanical Engineering
- Mechanics of Materials
Cite this
All-carbon composite for photovoltaics. / Tan, Alvin T L; Tung, Vincent C.; Kim, Jaemyung; Huang, Jen Hsien; Tevis, Ian; Chu, Chih Wei; Stupp, Samuel I; Huang, Jiaxing.
Materials Research Society Symposium Proceedings. Vol. 1344 2012. p. 67-73.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - All-carbon composite for photovoltaics
AU - Tan, Alvin T L
AU - Tung, Vincent C.
AU - Kim, Jaemyung
AU - Huang, Jen Hsien
AU - Tevis, Ian
AU - Chu, Chih Wei
AU - Stupp, Samuel I
AU - Huang, Jiaxing
PY - 2012
Y1 - 2012
N2 - Graphitic nanomaterials such as graphene, carbon nanotubes (CNT), and C 60 fullerenes are promising materials for energy applications because of their extraordinary electrical and optical properties. However, graphitic materials are not readily dispersible in water. Strategies to fabricate all-carbon nanocomposites typically involve covalent linking or surface functionalization, which breaks the conjugated electronic networks or contaminates functional carbon surfaces. Here, we demonstrate a facile surfactant-free strategy to create such all-carbon composites. Fullerenes, unfunctionalized single walled carbon nanotubes, and graphene oxide sheets can be conveniently co-assembled in water, resulting in a stable colloidal dispersion amenable to thin film processing. The thin film composite can be made conductive by mild thermal heating. Photovoltaic devices fabricated using the all-carbon composite as the active layer demonstrated an on-off ratio of nearly 10 6, an open circuit voltage of 0.59V, and a power conversion efficiency of 0.21%. This photoconductive and photovoltaic response is unprecedented among all-carbon based materials. Therefore, this surfactant-free, aqueous based approach to making all-carbon composites is promising for applications in optoelectronic devices.
AB - Graphitic nanomaterials such as graphene, carbon nanotubes (CNT), and C 60 fullerenes are promising materials for energy applications because of their extraordinary electrical and optical properties. However, graphitic materials are not readily dispersible in water. Strategies to fabricate all-carbon nanocomposites typically involve covalent linking or surface functionalization, which breaks the conjugated electronic networks or contaminates functional carbon surfaces. Here, we demonstrate a facile surfactant-free strategy to create such all-carbon composites. Fullerenes, unfunctionalized single walled carbon nanotubes, and graphene oxide sheets can be conveniently co-assembled in water, resulting in a stable colloidal dispersion amenable to thin film processing. The thin film composite can be made conductive by mild thermal heating. Photovoltaic devices fabricated using the all-carbon composite as the active layer demonstrated an on-off ratio of nearly 10 6, an open circuit voltage of 0.59V, and a power conversion efficiency of 0.21%. This photoconductive and photovoltaic response is unprecedented among all-carbon based materials. Therefore, this surfactant-free, aqueous based approach to making all-carbon composites is promising for applications in optoelectronic devices.
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U2 - 10.1557/opl.2011.1368
DO - 10.1557/opl.2011.1368
M3 - Conference contribution
AN - SCOPUS:83755183976
SN - 9781605113210
VL - 1344
SP - 67
EP - 73
BT - Materials Research Society Symposium Proceedings
ER -