| Hierarchical weeping willow nano-tree growth and effect of branching on dye-sensitized solar cell efficiency. | |
| | |
MedLine Citation:
|
PMID: 22538967 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
In this paper we have demonstrated the simple, low cost, low temperature, hydrothermal growth of weeping willow ZnO nano-trees with very long branches to realize high efficiency dye-sensitized solar cells (DSSCs). We also discuss the effects of branching on solar cell efficiency. By introducing branched growth on the backbone ZnO nanowires (NWs), the short circuit current density and the overall light conversion efficiency of the branched ZnO NW DSSCs increased to almost four times that for vertically grown ZnO NWs. The efficiency increase is attributed to the increase in surface area for higher dye loading and light harvesting and also to reduced charge recombination through direct conduction along the crystalline ZnO branches. As the length of the branches increased, the branches became flaccid and the increase in solar cell efficiency slowed down because the effective surface area increase was hindered by branch bundling during the drying process and subsequent decrease in the dye loading. |
| | |
Authors:
|
Indria Herman; Junyeob Yeo; Sukjoon Hong; Daeho Lee; Koo Hyun Nam; Jun-Ho Choi; Won-Hwa Hong; Dongjin Lee; Costas P Grigoropoulos; Seung Hwan Ko |
Related Documents
:
|
11819557 - Agglutination of helicobacter pylori coccoids by lectins. 14696657 - Nitric acid passivation does not affect in vitro biocompatibility of titanium. 21368887 - Maguks, scaffolding proteins at cell junctions, are substrates of different proteases d... 7262207 - Scanning electron microscope observations on surface changes occurring in murine granul... 6800007 - Non-bicarbonate buffering of ascites tumor cells in the rat as titrated by strong acids. 1425427 - Posttranslational processing of proenkephalin in att-20 cells: evidence for cleavage at... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-4-27 |
Journal Detail:
|
Title: Nanotechnology Volume: 23 ISSN: 1361-6528 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
|
Created Date: 2012-4-27 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101241272 Medline TA: Nanotechnology Country: - |
Other Details:
|
Languages: ENG Pagination: 194005 Citation Subset: - |
Affiliation:
|
Applied Nano Technology and Science Lab, Department of Mechanical Engineering, KAIST, 373-1 Gusung-Dong, Yusong-Gu, Daejeon 305-701, Korea. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Differentiated Epidermal Cells Regain the Ability to Regenerate a Skin Equivalent by Increasing the ...
Next Document: Processing Gapped Verbs.