TechConnect Innovator Spotlight:

TechConnect World Innovation Conference
May 13 - 16, 2018, Anaheim, CA

Transparent Conducting Oxide Film – Indium Tin Oxide Alternative
University of Minnesota, Minneapolis, MN, US


Indium Tin Oxide (ITO) is used as a transparent conducting oxide film in electronics, displays, windows and other devices. A highly reproducible and scalable process for making an ITO alternative that is highly transparent and has superior conductivity has been developed.



Researchers at the University of Minnesota have developed a novel growth approach for the synthesis of doped barium tin stannate (BSO) for use as a transparent conductive oxide (TCO). The material produced has high room-temperature conductivity and mobility when the dopant is lanthanum. The value of conductivity achieved is comparable to that of the best reported value for indium-tin-oxide (ITO), the industry standard for transparent conducting oxide. While other approaches have demonstrated the promise of Lanthanum-doped BSO as a replacement for ITO, these approaches lack reproducibility and the material produced has lower conductivity and transparency. The novel synthesis approach involves using a chemical precursor for tin as a substitute for a solid tin source in a hybrid molecular beam epitaxy system. The advantages include better structural quality of the films, scalable growth rates and high reproducibility. A variety of dopants can be used including lanthanum, neodymium, and gadolinium.



Primary Application Area: Electronics, Sensors, Communicationss

Technology Development Status: Concept

Technology Readiness Level: TRL 2



Organization Type: Academic/Gov Lab