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Wakeel Shah; Rabia Waheed Khwaja; Sadia Muniza Faraz; Zahoorul Hussain Awan; Muhammad Hassan Sayyad
Engineering proceedings, 09/2023, Letnik: 46, Številka: 1Journal Article
Dye-sensitized solar cells (DSSCs) are made of manganese dioxide (MnO2) and Ag-doped manganese dioxide (Ag-MnO2) counter electrodes (CEs). Herein, MnO2 and Ag-MnO2 were synthesized using the hydrothermal method and deposited through the drop casting technique. Electrical characterizations were performed to obtain the fill factor (FF), short-circuit current density (JSC), open-circuit voltage (VOC), and power conversion efficiency (PCE). Frequency- and voltage-dependent impedance spectroscopy were performed to gain an insight into the charge transport characteristics. DSSCs fabricated with a MnO2-coated electrode gave a PCE of 2.86% with a VOC of 0.60 V and a JSC of 8.72 mA/cm2, while DSSCs fabricated with Ag-MnO2 CEs demonstrated a higher PCE of 3.05%, with a VOC of 0.66 v and a JSC of 13.3 mA/cm2. The obtained results indicate that Ag-doped MnO2-coated counter electrodes have the potential to replace expensive Pt=coated counter electrodes.
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in: SICRIS
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