2013 Fiscal Year Final Research Report
Fabrication and evaluation of solar cells employing nanocarbon materials
| Project/Area Number |
23760180
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
EINARSSON Erik 東京大学, 工学(系)研究科(研究院), 講師 (00553603)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 垂直配向単層カーボンナノチューブ / 自己組織化 / ヘテロ接合太陽電池 |
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| Research Abstract |
By exposing vertically aligned single-walled CNT films to the vapor of a temperature-controlled water bath, the CNTs self-assembled into a micro-honeyomb structure. The obtained structure was dependent on the nanotube film thickness and the water vapor treatment parameters. We found that the honeycomb structure fabricated by this method exhibited higher transmittance and conductivity than another all-carbon material known as buckypaper.
We found that the single-walled CNTs in the honeycomb cell self-assembled into a flat layer that makes good contact with the underlying silicon substrate. We transferred the honeycomb onto an n-type silicon wafer, forming a heterojunction solar cell. Without doping or other treatment, we found the light conversion efficiency increased by approximately 5%.
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[Journal Article] Carbon atoms in etha- nol do not contribute equally to for- mation of single-walled carbon nano- tubes during CVD synthesis2013
Author(s)
R. Xiang, B. Hou, E. Einarsson, P. Zhao, S. Harish, K. Moriyama, Y. Miyauchi, S. Chiashi, Z. Tang, S. Maruyama
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Journal Title
ACS Nano
Volume: 7, (4)
Pages: 3095–3103
DOI
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