Carbon quantum dots as an effective nanomaterial for quantum dots-sensitized solar cells
محل انتشار: هفدهمین کنگره ملی مهندسی شیمی ایران
سال انتشار: 1400
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 192
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شناسه ملی سند علمی:
NICEC17_089
تاریخ نمایه سازی: 27 دی 1400
چکیده مقاله:
In this research, nitrogen doped carbon quantum dots (N-CQDs) were synthesized through pyrolysis using monoethanolamine (MEA) and citric acid. The impact of Thiourea (TH), as the source of sulfur, was investigated on the optical properties of synthesized CQDs. Synthesized CQDs were characterized by using FTIR analysis and optical properties were investigated by UV-Visible and PL Spectroscopy. The results revealed that N-CQDs and N,S-CQDs have the absorption edge of ۴۹۰ and ۵۱۵ nm, respectively. In addition, excitation - dependent emission was observed in synthesized CQDs through PL analysis. Photoelectrical measurements revealed improvement in efficiency of the fabricated solar cells using synthesized N,S-CQDs/TiO۲ compared to the as prepared TiO۲ solar cell. The results showed an improved efficiency with respect to the short-circuit current density and fill factor from ۰.۰۱۷ to ۰.۲۷ mA/cm۲ and from ۰.۴۷ to ۰.۶۶, respectively.
کلیدواژه ها:
نویسندگان
R RAHIMI KAKOLAKI
School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
SH FATEMI
School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
F Talatori
School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
M Fakheri
School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran