Inside-out Ostwald ripening: A facile process towards synthesizing anatase TiO2 microspheres for high-efficiency dye-sensitized solar cells

doi:10.1007/s12274-016-1081-2

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	Inside-out Ostwald ripening: A facile process towards synthesizing anatase TiO2 microspheres for high-efficiency dye-sensitized solar cells
	Ding, Yong 1,2; Xia, Xin 1; Chen, Wangchao 2; Hu, Linhua 2; Mo, Li'e 2; Huang, Yang 2; Dai, Songyuan 1,2
刊名	NANO RESEARCH
	2016-07-01
卷号	9 期号:7 页码:1891-1903
关键词	Ostwald Ripening Dye-sensitized Solar Cell Tio2 Microsphere Hollow Structure Acetylacetone
DOI	10.1007/s12274-016-1081-2
文献子类	Article
英文摘要	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.
WOS关键词	HOLLOW SPHERES ; HIGH-PERFORMANCE ; ELECTRON-TRANSPORT ; LIGHT-SCATTERING ; SINGLE-CRYSTALS ; NANOPARTICLES ; FABRICATION ; NANOCRYSTALS ; SURFACE ; FILMS
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000378523300003
资助机构	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) ; 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)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/22472]
专题	合肥物质科学研究院_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.