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Published on: July 19, 2019
Solution-processed Ag-nanowire/ZnO-nanoparticle composite transparent electrode for flexible organic solar cells
Bin Wei1, Saihu Pan, Taohong Wang
1School of Mechanical Engineering and Automation, Shanghai University, Shanghai, 200072, People's Republic of China. Key Laboratory of Advanced Display and System Applications, Ministry of Education, 149 Yanchang Road, Shanghai, 200072, People's Republic of China.
Researchers developed a novel hybrid transparent electrode using silver nanowires and zinc oxide nanoparticles. This advancement led to improved power conversion efficiency in indium tin oxide-free organic solar cells, reaching 2.85%.
Area of Science:
- Materials Science
- Renewable Energy
- Nanotechnology
Background:
- Traditional transparent electrodes often rely on Indium Tin Oxide (ITO), which is brittle and expensive.
- Developing cost-effective and flexible alternatives is crucial for advancing organic solar cell (OSC) technology.
Purpose of the Study:
- To demonstrate a hybrid transparent electrode using silver nanowires (AgNW) and zinc oxide nanoparticles (ZnO-NPs).
- To investigate the impact of ZnO-NP coating ratio on the performance of ITO-free OSCs.
- To evaluate the potential for flexible OSC applications.
Main Methods:
- Fabrication of a hybrid transparent electrode: solution-processed AgNW film coated with ZnO-NPs as a buffer layer.
- Systematic investigation of the effect of ZnO-NP coating ratio on device performance.
- Fabrication and testing of both rigid and flexible ITO-free OSCs.
Main Results:
- Optimized ITO-free OSCs achieved a power conversion efficiency (PCE) of 2.85%.
- Flexible OSCs utilizing the AgNW/ZnO-NP electrode on a PET substrate demonstrated a PCE of 2.2%.
Conclusions:
- The AgNW/ZnO-NP hybrid electrode is a promising ITO-free transparent electrode for organic solar cells.
- The developed electrode material shows potential for flexible electronic applications.
- Further optimization could lead to higher efficiencies in ITO-free OSCs.
