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oe1(光电查) - 科学论文

2 条数据
?? 中文（中国） ▾

  • Improving the performance of dye-sensitized solar cells by incoporating a novel ZnO:Al charge injection layer

    摘要： In this study, the e?ect of integrating a ZnO:Al (AZO) charge injection layer into dye-sensitized solar cells (DSSCs) is investigated. The AZO charge injection layer was deposited using a low-cost sol-gel deposition method directly onto ?uorine-doped tin oxide (FTO) conducting glass just before TiO2 photoanode coating. The structural and optoelectronic properties of AZO charge injection layer are then investigated as a function of the precursor concentration. The integration of AZO charge injection layer leads to the improvement of power conversion e?ciency (PCE) by preventing the electrolyte coming in contact with FTO and improving charge injection from the charge AZO layer. It was found that there is an optimum AZO precursor concentration for charge injection layer deposition and DSSCs fabricated using higher concentration resulted in reduced photovoltaic performance due to reduced light transparency, whilst charge injection layer deposited at lower precursor concentration were found to reduce DSSC performance due to insu?cient converage.

    关键词： Aluminium doped zinc oxide,Dye sensitized solar cells,Injection layer,Sol-gel

    更新于2025-09-16 10:30:52

  • High performance acetone sensor based on γ-Fe<sub>2</sub>O<sub>3</sub>/Al-ZnO nanocomposites

    摘要： Ternary nanocomposites made of γ-iron oxide and aluminium-doped zinc oxide (γ-Fe2O3/Al-ZnO NCs), with different metal oxides ratio (0-100%) were prepared through a solvothermal sol-gel process. The synthesized γ-Fe2O3/Al-ZnO NCs were employed to prepare conductometric gas sensors, then their sensing performances toward acetone were also investigated. Results revealed enhanced sensing performance of nanocomposites than both pure γ-Fe2O3 and Al-ZnO phases. In particular, the γ-Fe2O3(33%)/Al-ZnO based gas sensor showed the best sensing properties, like a high response of Rair/Rgas = 29, a short response time of 3 s, in addition to an improved selectivity toward acetone vs. ethanol at an operating temperature of 200 °C. Overall, ternary γ-Fe2O3/Al-ZnO NCs appear to be promising for the development of conductometric acetone sensors.

    关键词： Nanocomposite,Iron oxide,Aluminium doped zinc oxide,γ-Fe2O3,Al-ZnO,Acetone,Gas sensor

    更新于2025-09-10 09:29:36