Functional Multilayered Transparent Conducting Oxide Thin Films for Photovoltaic Devices
| Autor: | Chin Moo Cho, Jun Hong Noh, Hyun Suk Jung, Jin Young Kim, Jung-Kun Lee, Kug Sun Hong, In Sun Cho, Hyun Soo Han, Sangwook Lee |
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| Rok vydání: | 2008 |
| Předmět: |
Materials science
business.industry Annealing (metallurgy) Photovoltaic system Energy conversion efficiency Oxide Surfaces Coatings and Films Electronic Optical and Magnetic Materials Pulsed laser deposition Dye-sensitized solar cell chemistry.chemical_compound General Energy chemistry Optoelectronics Physical and Theoretical Chemistry Thin film business Ohmic contact |
| Zdroj: | The Journal of Physical Chemistry C. 113:1083-1087 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp808279j |
| Popis: | In this study, we present a thermally stable multilayered transparent conducting oxide (TCO) functionalized for dye-sensitized solar cells (DSSCs). Nb-doped TiO2 (NTO) layers deposited on conventional Sn-doped In2O3 (ITO) substrates using pulsed laser deposition (PLD) enhanced the optical-to-electrical conversion efficiency of the DSSCs by as much as 17% compared to that of bare ITO-based DSSCs. The electrical properties and J−V characteristics of the multilayered NTO/ITO films showed that the improved cell performance was due to the facilitated charge injection from TiO2 to ITO that resulted from the formation of an ohmic contact with ITO, as well as the conserved high conductivity of ITO after the oxidizing annealing process. Moreover, the NTO/ITO-based DSSC exhibited higher efficiency than a F-doped SnO2(FTO)-based one, which demonstrates that optimization of multilayered NTO-based TCOs is a realistic approach for achieving highly efficient photoenergy conversion devices. |
| Databáze: | OpenAIRE |
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