Array of solid-state dye-sensitized solar cells with micropatterned TiO2 nanoparticles for a high-voltage power...

Area of Science:

• Materials Science
• Renewable Energy
• Nanotechnology

Background:

• Solid-state dye-sensitized solar cells (SS-DSSCs) offer a promising alternative for energy harvesting.
• Achieving high voltage outputs from small-scale devices requires innovative fabrication techniques.

Purpose of the Study:

• To demonstrate a novel method for creating micropatterned titanium dioxide nanoparticles (TNPs) for SS-DSSCs.
• To develop a high-voltage power source using an array of interconnected SS-DSSCs.

Main Methods:

• Utilized a lift-off process with a sacrificial layer for patterning TNPs.
• Employed a soft-cure treatment for TNP fixation, ensuring stability and purity.
• Fabricated an array of 20 SS-DSSCs connected in series.

Main Results:

• Successfully created stable, micrometer-thick, and contamination-free TNP patterns.
• Demonstrated an array of SS-DSSCs capable of generating a high voltage output.
• Achieved a voltage output of approximately 7V from the 20-cell array.

Conclusions:

• The sacrificial layer approach enables high-fidelity patterning of TNPs for SS-DSSCs.
• Micropatterned TNP arrays are effective for creating miniature high-voltage power sources.
• This technology holds potential for various miniature electronic applications requiring stable, high voltage.