Fabricating Gold Electrodes on Flexible Polyimide Films: A Comprehensive Guide

Polyimide films are a popular choice for flexible electronic applications due to their remarkable properties. These films exhibit excellent thermal stability, mechanical strength, and chemical resistance, making them ideal for use in harsh environments. In addition, their inherent flexibility allows for the design of lightweight and compact devices that can easily conform to various shapes.

Platypus Technologies, a leader in custom design and fabrication services, offers cutting-edge solutions for a variety of industries, including the rapidly growing field of flexible electronics. One of our specialties is the fabrication of gold electrodes on flexible polyimide films. In this blog post, we’ll explore the importance of these innovative components, their applications, and the fabrication process.

picture of gold electrodes on flexible polyimide film
Gold thin film electrodes on flexible polyimide sheet. Fabricated by Platypus Technologies

Fabrication Process for Gold Electrodes on Polyimide Films

The fabrication of gold electrodes on polyimide films involves several critical steps:

  • Surface preparation of polyimide films: The film surface is cleaned and prepared to ensure proper adhesion of subsequent layers.
  • Deposition of adhesion layer: A thin layer of chromium or titanium is deposited onto the polyimide film to promote strong bonding with the gold layer.
  • Gold deposition: Gold is deposited onto the adhesion layer using techniques such as sputtering or evaporation, forming a conductive gold film.
  • Photolithography for patterning gold electrodes: Using Platypus Technologies’ photolithography techniques, a pattern is created in a photoresist layer applied to the gold film.
  • Metal lift-off or wet etching: The pattern is transferred to the gold layer either by dissolving the photoresist (metal lift-off) or selectively etching away unprotected gold regions (wet etching).
  • Post-processing and surface treatment: The fabricated gold electrodes may undergo additional surface treatments, such as oxygen plasma cleaning or the deposition of self-assembled monolayers, to enhance their performance.

Applications of Gold Electrodes on Flexible Polyimide Films

Gold electrodes on flexible polyimide films have numerous applications, including:

  • Wearable electronics: These flexible components enable the development of comfortable, skin-friendly wearable devices for health monitoring or fitness tracking.
  • Biosensors: Gold electrodes on polyimide films can be integrated into flexible biosensors for detecting various biomolecules in medical diagnostics or environmental monitoring.
  • Flexible solar cells: The fabrication of gold electrodes on polyimide films can facilitate the creation of lightweight, bendable solar cells for portable energy harvesting.

Platypus Technologies’ Capabilities and Services

At Platypus Technologies, our team of multidisciplinary experts and state-of-the-art facilities ensure consistent, reliable, and high-quality solutions for gold electrode fabrication on polyimide films. Our dedicated cleanrooms, extensive surface characterization equipment, and rapid delivery times make us an ideal partner for your flexible electronics needs.


Flexible gold electrodes on polyimide films are vital components for a wide range of applications, from wearable electronics to solar cells. With Platypus Technologies’ expertise and advanced capabilities, you can confidently develop innovative, high-performance products. Contact us today to discuss your specific requirements or to learn more about our fabrication services.

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