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Content Provider | IEEE Xplore Digital Library |
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Author | Jun Hong Noh Jong Hun Park Hyun Soo Han Sangwook Lee Dong Hoe Kim Hyun Suk Jung Kung Sun Hong |
Copyright Year | 2010 |
Description | Author affiliation: School of Advanced Materials Engineering, Kookmin University, Jeongneung-dong, Seongbuk-gu, Seoul 136-702, S. Korea (Hyun Suk Jung) || Department of Materials Science & Engineering, Seoul National University, 151-742, Korea (Jun Hong Noh; Jong Hun Park; Hyun Soo Han; Sangwook Lee; Dong Hoe Kim; Kung Sun Hong) |
Abstract | Hierarchically organized TiO2 nanostructures were synthesized on fluorine-doped SnO2(FTO)/glass substrate at room temperature under various oxygen pressures using pulsed laser deposition (PLD). The microstructures of the obtained TiO2 nanostructures were changed sensitively as oxygen pressure. A fully dense structure could be achieved below oxygen pressure of 50 mTorr. However, ultrafine nanoparticles (5∼15 nm) were produced over 50 mTorr and they assembled hierarchically in ordered forest consisted of characteristic tree-shaped structures. The hierarchical assemblies were gradually to be porous and finally the tree shape was disappeared and the assemblies were disordered with increasing oxygen pressure. The synthesized TiO2 nanostructures were changed from amorphous to anatase phase without morphological changes after air annealing at 450 °C for 1 hour. The anatase nanostructures were applied to dye-sensitized solar cells (DSSCs). Cell performance and electron diffusion characteristics of the hierarchical anatase assemble prepared by PLD as photoelectrode were investigated in DSSCs. Optimal TiO2 nanostructure synthesized by PLD for photoelectrode in DSSCs was discussed in terms of electron transport and dye absorption. |
Starting Page | 1056 |
Ending Page | 1056 |
File Size | 34908 |
Page Count | 1 |
File Format | |
ISBN | 9781424435432 |
DOI | 10.1109/INEC.2010.5425044 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2010-01-03 |
Publisher Place | China |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Decision support systems Temperature sensors Nanoparticles Glass Pulsed laser deposition Nanostructures Microstructure Assembly Electrons Optical pulses |
Content Type | Text |
Resource Type | Article |
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