کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6617524 | 459635 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High-efficient dye-sensitized solar cells with all-inorganic Cu2ZnSnSe4 counter-electrode by ligand exchange
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
For the first time, we synthesized all-inorganic Cu2ZnSnSe4 nanocrystals (CZTSe NCs) by ligand exchange strategy using a simple metal-free chalcogenide compound [(NH4)2S] as the inorganic ligand. The results of I-V and Hall-effect measurement illuminated that all-inorganic CZTSe films reveal the excellent electron-transfer performance. When the all-inorganic CZTSe NCs films used as counter electrode (CE) in dye-sensitized solar cells (DSSCs), the photocurrent density increases significantly from 4.48 (OLA-capped CZTSe NCs) to 14.17 mA/cm2 (all-inorganic CZTSe NCs). A higher efficiency of η = 7.06% was achieved for all-inorganic CZTSe films as CE in DSSCs. The photovoltaic results showed that high temperature annealing can be avoided for all-inorganic CZTSe films as CE. Cyclic voltammetry (CV) results and electrochemical impedance spectroscopy (EIS) showed the all-inorganic CZTSe films as CE exhibited good electrocatalytic activity and high conductivity, which demonstrated that all-inorganic CZTSe NCs would serve as an effective CE material in DSSCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 104, 1 August 2013, Pages 26-32
Journal: Electrochimica Acta - Volume 104, 1 August 2013, Pages 26-32
نویسندگان
Xia Wang, Wen-Hui Zhou, Zheng-Ji Zhou, Ze-Liang Hou, Jie Guo, Si-Xin Wu,