Enhancement of Photocurrent Generation by C-60-encapsulated Single-walled Carbon Nanotubes in Ru-sensitized Photoelectrochemical Cell
- Authors
- Lee, Jungwoo; Park, Taehee; Lee, Jongtaek; Jang, Mira; Lee, Seungjin; Kim, Heesu; Han, Sung-Hwan; Yi, Whikun
- Issue Date
- Aug-2012
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- Photocurrent; C60@SWNTs; Encapsulation; Electric field; PECs
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.8, pp.2689 - 2693
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 33
- Number
- 8
- Start Page
- 2689
- End Page
- 2693
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/144731
- DOI
- 10.5012/bkcs.2012.33.8.2689
- ISSN
- 0253-2964
- Abstract
- Single-walled carbon nanotubes (SWNTs) and C-60-encapsulated SWNTs (C-60@SWNTs) are introduced to Ru-sensitized photoelectrochemical cells (PECs), and photocurrents are compared between two cells, i.e., an RuL2(NCS)(2)/DAPV/SWNTs/ITO cell and an RuL2(NCS)(2)/DAPV/C-60@SWNTs/ITO cell. [L = 2,2'-bipyridine-4,4'-dicarboxylic acid, DAPV = di-(3-aminopropyl)-viologen, and ITO = indium-tin oxide] The photocurrents are increased by 70.6% in the presence of C-60@SWNTs. To explain the photocurrent increase, the reverse-field emission method is used, i.e., RuL2(NCS)(2)/DAPV/SWNTs/ITO cell (or RuL2(NCS)(2)/DAPV/C-60@SWNTs/ITO cell) as an anode and a counter electrode Pt as a cathode in the external electric field. The improved field emission properties, i.e., beta (field enhancement factor) and emission currents in the reverse-field emission with C-60@SWNTs indicate the enhancement of the PEC electric field, which implies the improvement of the electron transfer rate along with the reduced charge recombination in the cell.
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