Distinction between SnO2 nanoparticles synthesized using co-precipitation and solvothermal methods for the photovoltaic efficiency of dye-sensitized solar cells

Bulletin of materials science

A E Shalan²  I Osama¹  M M Rashad¹  I A Ibrahim¹ 

[1] Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, Egypt$$Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, EgyptCentral Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, Egypt$$;Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, Egypt$$Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany$$Central Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, EgyptCentral Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, Egypt$$Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany$$Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyCentral Metallurgical Research and Development Institute (CMRDI), P.O. Box 87, Helwan, Cairo, Egypt$$Institute of Materials for Electronics and Energy Technology (i-MEET), Friedrich-Alexander-University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany$$

关键词: SnO2 nanoparticle;    co-precipitation method;    solvothermal processes;    dye-sensitized solar cells.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Nanocrystalline SnO₂ powders prepared by solvothermal and co-precipitation pathways have been characterized using XRD, TEM, UVâ€�?�Visible absorption, BET specific surface area (ð‘�??_BET) method, EIS and 𝐽â€�?�ð�?��?? measurements. The obtained powders have a surface area and size of 38.59 m²/g and 10.63 nm for the SnO₂ powders synthesized solvothermally at a temperature of 200 °C for 24 h, while the values were 32.59 m²/g and 16.20 nm for the formed hydroxide precursor annealed at 1000 °C for 2 h by co-precipitation route. The microstructure of the formed powders appeared as tetragonal-like structure. Thus, the prepared SnO₂ nanopowders using two pathways were applied as an electrode in dye-sensitized solar cell (DSSC). The photoelectrochemical measurements indicated that the cell presents short-circuit photocurrent (𝐽_sc), open circuit voltage (ð‘�??_oc) and fill factor (FF) were 7.017 mA/cm², 0.690 V and 69.68%, respectively, for solvothermal route and they were 4.241 mA/cm², 0.756 V and 66.74%, respectively, for co-precipitation method. The energy conversion efficiency of the solvothermal SnO₂ powders was considerably higher than that formed by co-precipitation powders; ∼ 3.20% (solvothermal) and 2.01% (co-precipitation) with the N719 dye under 100 mW/cm² of simulated sunlight, respectively. These results were in agreement with EIS study showing that the electrons were transferred rapidly to the surface of the solvothermal-modified SnO₂ nanoparticles, compared with that of a co-precipitation-modified SnO₂ nanoparticles.

【 授权许可】

Unknown