| 학회 | 한국재료학회 |
| 학술대회 | 2015년 봄 (05/14 ~ 05/15, 구미코) |
| 권호 | 21권 1호 |
| 발표분야 | C. 에너지 재료 |
| 제목 | Synthesis and Characterization of Surface-modified TiO2 Nanowires for Dye-Sensitized Solar Cells |
| 초록 | One-dimensional (1-D) nanostructures have been receiving considerable attention for use in the fields of optics, electronics, and energy conversion devices because of their unique optical, electrical, and electrochemical properties. Many studies have been attempted to fabricate 1-D nanostructures with various morphologies including nanowires (NWs), nanorods, and nanobelts. Until now, various synthetic methods, such as chemical vapor deposition (CVD), sol-gel, hydrothermal, and electrospinning method, have been developed for the fabrication of 1-D nanostructure. Among these, electrospinning methods have been widely used as an attractive method to synthesize 1-D nanostructures because of its unique advantages such as low cost, simplicity, and mass producibility. Also, electrospinning is possible to synthesize various morphologies (i.e., core-shell NWs, hollow NWs, porous NWs) by adjusting parameters such as environment condition, needle type, and concentration of precursor and polymer. Especially, 1-D nanostructures used as the electrode offer the enhanced electron mobility and transport rate and hereby can improve the performance for dye-sensitized solar cells (DSSCs) [1]. However, use of 1-D nanostructure is substantially critical for a performance of DSSCs due to low dye adsorption and low surface area of its nanostructure compared to nanoparticles. Therefore, study of surface modification, which is performed to enhance surface area of 1-D nanostructure, is essential for high-efficiency DSSCs. In this study, we successfully synthesized surface-modified TiO2 NWs using electrospinning. The morphological, structural, chemical properties of the resulting NWs were characterized by using a scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). Also, photovoltaic performances of dye-sensitized solar cells (DSSCs) fabricated with the surface modified TiO2 NWs were measured using a solar simulator. Reference [1] S. H. Hwang, C. Kim, H. Song, S. Son, and J. Jang, 4, (2012), 5287-5292. |
| 저자 | 구본율, 안효진 |
| 소속 | 서울과학기술대 |
| 키워드 | TiO<SUB>2</SUB>; 1-dimensional nanostructure; Dye-sensitized solar cells; electrospinning |
