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2016年论文

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Design of Ag@C@SnO2@TiO2 yolk-shell nanospheres with enhanced photoelectric properties for dye sensitized solar cells

发布时间:2016.06.30点击:

【作者】:Zhao Peilu, Li Dan,Yao Shiting,Zhang Yiqun,Liu Fengmin*, Sun Peng,Chuai Xiaohong,Gao Yuan, Lu Geyu*

【题目】:Design of Ag@C@SnO2@TiO2 yolk-shell nanospheres with enhanced photoelectric properties for dye sensitized solar cells

【关键词】:Dye-sensitized solar cells, Core-shell structure, Ag@carbon core,High light-harvesting efficiency, Enhanced electron transfer properties,WALLED CARBON NANOTUBES, HIGH-EFFICIENCY, SILVER NANOPARTICLES,BILAYERED PHOTOANODE METAL NANOPARTICLES, ELECTRON-TRANSPORT,SNO2 MICROSPHERES, SCATTERING LAYER, HOLLOW SPHERES,TIO2

【版面信息】:JOURNAL OF POWER SOURCES 318 (2016) 49-56

摘要:

The hierarchical Ag@C@SnO2@TiO2nanospheres (ACSTS) have been successfully synthesized by deposition of SnO2and TiO2on the Ag@C templates layer by layer. The size of ACSTS is ca. 360 nm while the Ag@C cores have an average diameter of about 300 nm. The rough and porous shell structure consisting of SnO2and TiO2ensures a large specific surface area (115.5 m2g-1). To demonstrate how such a unique structure might lead to more excellent photovoltaic property, several kinds of dye-sensitized solar cells (DSSCs) are also fabricated using different nanospheres based photoanodes. It is found that the ACSTS based DSSC exhibits an obvious improvement in cell performance. According to various technical characterization, the ACSTS can provide dual-functions of light absorption and charge transfer, hence resulting in an enhanced short-circuit photocurrent density of 18.68 mA cm-2and a higher FF of 63% compared with other DSSCs. The ACSTS cell finally obtains a PCE of up to 8.62%, increasing by 70.4% and 10.2% than hollow TiO2nanospheres and Ag@C@TiO2nanospheres based cells, respectively. The improved photovoltaic properties of ACSTS cell can be mainly ascribed to the unique microstructure and the synergistic effect of the encapsulated Ag@C cores.

论文作者 Zhao Peilu, Li Dan,Yao Shiting,Zhang Yiqun,Liu Fengmin*, Sun Peng,Chuai Xiaohong,Gao Yuan, Lu Geyu* 论文关键词 Dye-sensitized solar cells, Core-shell structure, Ag@carbon core,High light-harvesting efficiency, Enhanced electron transfer properties,WALLED CARBON NANOTUBES, HIGH-EFFICIENCY, SILVER NANOPARTICLES,BILAYERED PHOTOANODE METAL NANOPARTICLES, ELECTRON-TRANSPORT,SNO2 MICROSPHERES, SCATTERING LAYER, HOLLOW SPHERES,TIO2
版面信息 JOURNAL OF POWER SOURCES 318 (2016) 49-56

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