Highly Stable n-Type Organic Conductor

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Transparent conductors are critical components in optoelectronic devices, ranging from light emitting diodes, solar cells, electrochromic devices, touch screens, defrosting windows, and electromagnetic shielding. Indium tin oxide (ITO) is the most common transparent conductor accounting for 97% of the global transparent conductor market. However, ITO thin films are mechanically fragile, and indium is a rare mineral, leading to concerns over supply and pricing. Researchers at Purdue University have developed a shelf-stable, transparent conductor with high transmissibility and low sheet resistance. The Purdue technology is scalable and yields a highly conductive, stable, n-type solution processable polymer from a one-pot polymerization and doping process. Conductivity is measured to be over 5000 S/cm with a sheet resistance of less than 100 ohms/sq while maintaining 80% transmittance.

Highly Conductive and Solution-Processable n-Doped Transparent Organic Conductor. Zhifan Ke, Ashkan Abtahi, Jinhyo Hwang, Ke Chen, Jagrity Chaudhary, Inho Song, Kuluni Perera, Liyan You, Kyle N. Baustert, Kenneth R. Graham, and Jianguo Mei. Journal of the American Chemical Society 2023 145 (6), 3706-3715. DOI: 10.1021/jacs.2c13051


Technology Validation: The conductive films synthesized using this method demonstrated transmittance of 80% and sheet resistance of 45 ohms/square, which is comparable to that of ITO.

- High transmissibility
- Low sheet resistance
- Shelf-stable
- Solution-processable
- One-pot polymerization and doping
- Easy to pattern
- Durable

- Transparent conductor for optoelectronic devices
Oct 26, 2022
Provisional-Gov. Funding
United States

Oct 7, 2022
Provisional-Gov. Funding
United States
Purdue Office of Technology Commercialization
The Convergence Center
101 Foundry Drive, Suite 2500
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org