Radially oriented mesoporous TiO2 microspheres with single-crystal-like anatase walls for high-efficiency optoelectronic devices

被引：145

作者：

Liu, Yong ^{[1
]}

Che, Renchao ^{[1
]}

Chen, Gang ^{[2
]}

Fan, Jianwei ^{[1
,3
]}

Sun, Zhenkun ^{[1
]}

Wu, Zhangxiong ^{[1
]}

Wang, Minghong ^{[1
]}

Li, Bin ^{[1
]}

Wei, Jing ^{[1
]}

Wei, Yong ^{[1
]}

Wang, Geng ^{[2
]}

Guan, Guozhen ^{[1
]}

Elzatahry, Ahmed A. ^{[4
,5
]}

Bagabas, Abdulaziz A. ^{[6
]}

Al-Enizi, Abdullah M. ^{[7
]}

Deng, Yonghui ^{[1
]}

Peng, Huisheng ^{[8
,9
]}

Zhao, Dongyuan ^{[1
]}

机构：

[1] Fudan Univ, Dept Chem, Shanghai Key Lab Mol Catalysis & Innovat Mat,Lab, Key Lab Mol Engn Polymers,iChEM Collaborat Innova, Shanghai 200433, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[3] Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China

[4] Qatar Univ, Coll Arts & Sci, Mat Sci & Technol Program, Doha, Qatar

[5] City Sci Res & Technol Applicat, Adv Technol & New Mat Res Inst, Polymer Mat Res Dept, Alexandria 21934, Egypt

[6] KACST, NPTC, MSRI, Riyadh 11442, Saudi Arabia

[7] King Saud Univ, Dept Chem, Coll Sci, Riyadh 11451, Saudi Arabia

[8] Fudan Univ, State Key Lab Mol Engn Polymers, Dept Macromol Sci, Shanghai 200438, Peoples R China

[9] Fudan Univ, Lab Adv Mat, Shanghai 200438, Peoples R China

来源：

SCIENCE ADVANCES | 2015年 / 1卷 / 04期

基金：

美国国家科学基金会;

关键词：

Optoelectronic devices - Conductive films - Mesoporous materials - Single crystals - Microspheres - Crystalline materials - Dye-sensitized solar cells - Energy conversion efficiency - Evaporation - Walls (structural partitions);

D O I：

10.1126/sciadv.1500166

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 similar to 800 nm, well-controlled radially oriented hexagonal mesochannels, and crystalline anatase walls. The mesoporous TiO2 spheres have a large accessible surface area (112m2/g), a large pore volume (0.164 cm(3)/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.

引用

页数：8

共 31 条

[1] Highly efficient dye-sensitized solar cells with a titania thin-film electrode composed of a network structure of single-crystal-like TiO2 nanowires made by the "oriented attachment" mechanism [J].