Radially oriented mesoporous TiO2 microspheres with single-crystal–like anatase walls for high-efficiency optoelectronic devices
Author | Liu, Yong |
Author | Che, Renchao |
Author | Chen, Gang |
Author | Fan, Jianwei |
Author | Sun, Zhenkun |
Author | Wu, Zhangxiong |
Author | Wang, Minghong |
Author | Li, Bin |
Author | Wei, Jing |
Author | Wei, Yong |
Author | Wang, Geng |
Author | Guan, Guozhen |
Author | Elzatahry, Ahmed A. |
Author | Bagabas, Abdulaziz A. |
Author | Al-Enizi, Abdullah M. |
Author | Deng, Yonghui |
Author | Peng, Huisheng |
Author | Zhao, Dongyuan |
Available date | 2016-11-03T09:52:44Z |
Publication Date | 2015-05-08 |
Publication Name | Science Advances |
Identifier | http://dx.doi.org/10.1126/sciadv.1500166 |
Citation | Liu Y, Che R, Chen G, et al. Radially oriented mesoporous TiO2 microspheres with single-crystal–like anatase walls for high-efficiency optoelectronic devices. Science Advances. 2015;1(4):e1500166. |
Abstract | Highly crystalline mesoporous materials with oriented configurations are in demand for high-performance energy conversion devices. We report a simple evaporation-driven oriented assembly method to synthesize three-dimensional open mesoporous TiO2 microspheres with a diameter of ~800 nm, well-controlled radially oriented hexagonal mesochannels, and crystalline anatase walls. The mesoporous TiO2 spheres have a large accessible surface area (112 m2/g), a large pore volume (0.164 cm3/g), and highly single-crystal–like anatase walls with dominant (101) exposed facets, making them ideal for conducting mesoscopic photoanode films. Dye-sensitized solar cells (DSSCs) based on the mesoporous TiO2 microspheres and commercial dye N719 have a photoelectric conversion efficiency of up to 12.1%. This evaporation-driven approach can create opportunities for tailoring the orientation of inorganic building blocks in the assembly of various mesoporous materials. |
Sponsor | State Key Basic Research Program of China (2013CB934104 and 2012CB224805), the National Science Foundation (21210004), the Science and Technology Commission of Shanghai Municipality (08DZ2270500), the Shanghai Leading Academic Discipline Project (B108), King Abdulaziz City for Science and Technology (project no. 29-280), and Deanship of Scientific Research, King Saud University–The International Highly Cited Research Group Program (IHCRG#14-102). Y.L. also acknowledges the Interdisciplinary Outstanding Doctoral Research Funding of Fudan University (EZH2203302/001). |
Language | en |
Publisher | American Association for the Advancement of Science |
Subject | Mesoporous materials Titania Assembly Dye-sensitized solar cells Synthesis Radial orientation Single-crystalline Optoelectronic |
Type | Article |
Issue Number | 4 |
Volume Number | 1 |
ESSN | 2375-2548 |
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