کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
186273 459609 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transmission enhanced photoanodes for efficient dye-sensitized solar cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Transmission enhanced photoanodes for efficient dye-sensitized solar cells
چکیده انگلیسی


• SiO2 incorporated TiO2 nanocrystallines were used as transmission enhanced photoanodes.
• Excitation of dye molecules were significantly elevated.
• An efficiency of 9.13% was recorded on DSSC from SiO2 incorporated TiO2 nanocrystallines.

The power conversion efficiency elevation of dye-sensitized solar cell (DSSC) is limited by the incomplete dye excitation, recombination of photogenerated electrons with ions in liquid electrolyte, low electron density in conduction band (CB) of TiO2 nanoscrystalline as well as photodegradation of dye molecules. With an aim of enhancing the power conversion efficiency, here we describe an employment of SiO2 incorporated TiO2 to enhance transmission, to suppress the recombination of electron-electrolyte, to elevate the dye loading and to increase the dye photostability. We find that the highest conversion occurs at 7 wt% SiO2 in SiO2 incorporated TiO2 nanocrystallines is 9.13% (measured under standard AM1.5 test conditions) in comparison with 6.26% from pure TiO2 photoanode, giving an efficiency enhancement by 45.8%. This strategy provides new opportunities for the fabrication of highly efficient DSSCs, and the efficiency record is expected to be surpassed by scalable technique and components.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 125, 10 April 2014, Pages 646–651
نویسندگان
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