Institutional Repository of Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol，Hefei 230031, Anhui, Peoples R China
| Inside-out Ostwald ripening: A facile process towards synthesizing anatase TiO2 microspheres for high-efficiency dye-sensitized solar cells | |
Ding, Yong1,2; Xia, Xin1; Chen, Wangchao2 ; Hu, Linhua2; Mo, Li'e2; Huang, Yang2; Dai, Songyuan1,2
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| 2016-07-01 | |
| 发表期刊 | NANO RESEARCH
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| 摘要 | A facile inside-out Ostwald ripening route to the morphology-controlled preparation of TiO2 microspheres is developed. Here, TiO2 hollow microspheres (HM) and solid microspheres (SM) are prepared by adjusting the volume ratio of isopropanol (IPA) to acetylacetone (Acac) in the solvothermal process. During the formation process of HM, precipitation of solid cores, subsequent deposition of outer shells on the surface of cores, and simultaneous core dissolution and shell recrystallization are observed, which validate the inside-out Ostwald ripening mechanism. Design and optimization of the properties (pore size, surface area, and trap state) of TiO2 microspheres are vital to the high performance of dyesensitized solar cells (DSSCs). The optimized TiO2 microspheres (rHM and rSM) obtained by post-processing on recrystallization, possess large pore sizes, high surface areas and reduced trap states (Ti3+ and oxygen vacancy), and are thus ideal materials for photovoltaic devices. The power conversion efficiency of DSSCs fabricated using rHM photoanode is 11.22%, which is significantly improved compared with the 10.54% efficiency of the rSM-based DSSC. Our work provides a strategy for synthesizing TiO2 microspheres that simultaneously accommodate different physical properties, in terms of surface area, crystallinity, morphology, and mesoporosity. |
| 文章类型 | Article |
| 关键词 | Ostwald Ripening Dye-sensitized Solar Cell Tio2 Microsphere Hollow Structure Acetylacetone |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| DOI | 10.1007/s12274-016-1081-2 |
| 关键词[WOS] | HOLLOW SPHERES ; HIGH-PERFORMANCE ; ELECTRON-TRANSPORT ; LIGHT-SCATTERING ; SINGLE-CRYSTALS ; NANOPARTICLES ; FABRICATION ; NANOCRYSTALS ; SURFACE ; FILMS |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | National Natural Science Foundation of China(21173228 ; National Natural Science Foundation of China(21173228 ; National Natural Science Foundation of China(21173228 ; National Natural Science Foundation of China(21173228 ; National High-Tech Research and Development Program of China(2015AA050602) ; National High-Tech Research and Development Program of China(2015AA050602) ; National High-Tech Research and Development Program of China(2015AA050602) ; National High-Tech Research and Development Program of China(2015AA050602) ; 61204075) ; 61204075) ; 61204075) ; 61204075) |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS类目 | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied |
| WOS记录号 | WOS:000378523300003 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/22472 |
| 专题 | 应用技术研究所 |
| 作者单位 | 1.North China Elect Power Univ, Beijing Key Lab Novel Thin Film Solar Cells, Beijing 102206, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Appl Technol, Key Lab Novel Thin Film Solar Cells, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Yong,Xia, Xin,Chen, Wangchao,et al. Inside-out Ostwald ripening: A facile process towards synthesizing anatase TiO2 microspheres for high-efficiency dye-sensitized solar cells[J]. NANO RESEARCH,2016,9(7):1891-1903. |
| APA | Ding, Yong.,Xia, Xin.,Chen, Wangchao.,Hu, Linhua.,Mo, Li'e.,...&Dai, Songyuan.(2016).Inside-out Ostwald ripening: A facile process towards synthesizing anatase TiO2 microspheres for high-efficiency dye-sensitized solar cells.NANO RESEARCH,9(7),1891-1903. |
| MLA | Ding, Yong,et al."Inside-out Ostwald ripening: A facile process towards synthesizing anatase TiO2 microspheres for high-efficiency dye-sensitized solar cells".NANO RESEARCH 9.7(2016):1891-1903. |
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| Inside-out Ostwald r（2877KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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