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Shape-controlled synthesis of single-crystalline anatase TiO2 micro/nanoarchitectures for efficient dye-sensitized solar cells
Ding, Yong1,2; Zhang, Tingting3,4,5; Liu, Cheng1; Yang, Yi1; Pan, Jiahong1; Yao, Jianxi1; Hu, Linhua2; Dai, Songyuan1,2
2017-05-01
Source PublicationSUSTAINABLE ENERGY & FUELS
ISSN2398-4902
Volume1Issue:3Pages:520-528
Abstract

Single-crystal anatase TiO2 nanocrystals were assembled into different morphological TiO2 micro/nanoarchitectures, including TiO2 hollow microspheres (HM), solid microspheres (SM), and diamondshaped nanocrystals (NR), by well-controlled solvothermal reactions. The morphology of the resultant TiO2 micro/nanoarchitectures, along with the micro/nanostructural shape, size and crystallinity, can be controlled by varying the concentration of the reactants. It was found that the formation process of TiO2 hollow microspheres might include the hydrolysis of titanium alkoxide with water from the Mannich reaction, the aggregation of TiO2 nanocrystals, the anisotropic crystal growth, and the Ostwald ripening. In addition, we have performed systematic density functional theory (DFT) calculations on the adsorption energy of ethylenediamine molecules on the exposed surfaces and investigated the formation mechanism of single-crystalline nanocrystals. Furthermore, the three TiO2 micro/nanoarchitectures (SM, HM, and NR) were used as photoanode materials in dye-sensitized solar cells (DSSCs) and demonstrated improved light harvesting efficiency and electron collection efficiency, which were much greater than conventional TiO2 nanoparticles under the same conditions. Combined with the large specific surface area and high light scattering ability, the HM-based photoanode achieves the highest power conversion efficiency of 10.66%. Meanwhile, our method provides a versatility for structural engineering of various targeted morphological products to prepare high performance photovoltaic device.

DOI10.1039/c6se00041j
WOS KeywordHOLLOW SPHERES ; TITANIA SPHERES ; MICROSPHERES ; FACETS ; 1ST-PRINCIPLES ; FABRICATION ; ADSORPTION ; FILM
Indexed BySCI
Language英语
Funding ProjectNational High Technology Research and Development Program of China[2015AA050602] ; National Natural Science Foundation of China[51572080] ; National Natural Science Foundation of China[61404142] ; National Key Basic Research Program of China (973 Program)[2015CB932201]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000422773700012
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/35136
Collection应用技术研究所
Corresponding AuthorHu, Linhua; Dai, Songyuan
Affiliation1.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, Anhui, Peoples R China
3.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
5.Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
Recommended Citation
GB/T 7714
Ding, Yong,Zhang, Tingting,Liu, Cheng,et al. Shape-controlled synthesis of single-crystalline anatase TiO2 micro/nanoarchitectures for efficient dye-sensitized solar cells[J]. SUSTAINABLE ENERGY & FUELS,2017,1(3):520-528.
APA Ding, Yong.,Zhang, Tingting.,Liu, Cheng.,Yang, Yi.,Pan, Jiahong.,...&Dai, Songyuan.(2017).Shape-controlled synthesis of single-crystalline anatase TiO2 micro/nanoarchitectures for efficient dye-sensitized solar cells.SUSTAINABLE ENERGY & FUELS,1(3),520-528.
MLA Ding, Yong,et al."Shape-controlled synthesis of single-crystalline anatase TiO2 micro/nanoarchitectures for efficient dye-sensitized solar cells".SUSTAINABLE ENERGY & FUELS 1.3(2017):520-528.
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