Synthesis and characterization of Fe-doped TiO2 hollow spheres for dye-sensitized solar cell applications

被引：35
作者：
Kanjana, Nattakan [1 ]
Maiaugree, Wasan [1 ]
Poolcharuansin, Phitsanu [1 ]
Laokul, Paveena [1 ]
机构：
[1] Mahasarakham Univ, Fac Sci, Dept Phys, Kantarawichai 44150, Mahasarakham, Thailand
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2021年 / 271卷
关键词：
Fe-doped TiO2; Hollow spheres; Light scattering; Light-harvesting; Dye-sensitized solar cells; LIGHT-SCATTERING CENTERS; OPEN-CIRCUIT VOLTAGE; PHOTOCATALYTIC ACTIVITY; FACILE SYNTHESIS; SPHERICAL TIO2; EFFICIENCY; PERFORMANCE; MICROSPHERES; DEGRADATION; NANOSHEETS;
D O I：
10.1016/j.mseb.2021.115311
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fe-doped TiO2 hollow spheres (THs@Fe) with various Fe contents, 0, 0.25, 0.50, 0.75 and 1.00 mol%, were prepared using carbon templates and further employed as photoanode for dye-sensitized solar cells. The analytical results indicated that the hollow structure of THs@Fe promoted an effective light penetration and scattering capability, which resulted in increased light-harvesting efficiency. The increase in specific surface area and pore volume caused enhancement of dye molecules adsorbed on the photoanodes, which directly affected the performance of the DSSCs. The highest power conversion efficiency, 6.025 +/- 0.141%, was obtained from 18NR/THs@0.25Fe bilayer photoelectrodes with a JSC of 15.392 +/- 0.458 mA cm(-2), V-OC of 0.759 +/- 0.001 V, and FF of 0.516 +/- 0.018. The highest achieved PCE value was attributed to formation of oxygen vacancies and other defect states generating the shallow electron traps that are essential for charge transport, electron lifetime and resulted in the DSSCs performance.
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页数：13
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