کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8035255 | 1518048 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrathin SnO2 layer for efficient carrier collection in dye-sensitized solar cells
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An ultrathin SnO2 layer was introduced as a blocking layer in dye-sensitized solar cells (DSSCs) for improving conversion efficiency. The SnO2 blocking layer, composed of approximately 10 nm nanoparticles, was deposited on the fluorine-doped tin oxide (FTO) coated glass by SnCl4 treatment, a simple and inexpensive method. This SnO2 blocking layer increased the onset of dark current from FTO to electrolyte, suppressing charge recombination at the FTO/electrolyte interface. The cascading band structure of TiO2 and SnO2 increased the charge carrier lifetime, resulting in effective charge collection. Examining DSSC performance as a function of SnCl4 treatment time, a peak conversion efficiency of 7.33% was achieved for a SnCl4 treatment time of 15 min (SnO2 layer thickness ~ 12 nm), compared to 6.08% for an untreated cell. Also, compared to a TiO2 blocking layer, the SnO2 blocking layer showed a higher performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 556, 1 April 2014, Pages 503-508
Journal: Thin Solid Films - Volume 556, 1 April 2014, Pages 503-508
نویسندگان
Seok-Min Yong, Nikolay Tsvetkov, Liudmila Larina, Byung Tae Ahn, Do Kyung Kim,