Direct optical lithography of functional inorganic nanomaterials
Science 2017, vol 357, p385-388
By Dmitri Talapin from Department of Chemistry, at the University of Chicago
Supported by DoD Air Force Office of Scientific Research, and the NSF
Abstract: Photolithography is an important manufacturing process that relies on using photoresists, typically polymer formulations, that change solubility when illuminated with ultraviolet light. Here, we introduce a general chemical approach for photoresist-free, direct optical lithography of functional inorganic nanomaterials. The patterned materials can be metals, semiconductors, oxides, magnetic, or rare earth compositions. No organic impurities are present in the patterned layers, which helps achieve good electronic and optical properties.The conductivity, carrier mobility, dielectric, and luminescence properties of optically patterned layers are on par with the properties of state-of-the-art solution-processed materials. The ability to directly pattern all-inorganic layers by using a light exposure dose comparable with that of organic photoresists provides an alternate route for thin-film device manufacturing.
My takeaways:
This new way to thin film print nanomaterials and conductive films will help revolutionize the manufacturing applications the author's reference; optoelectronic devices like light emitting diodes, field effect transistors, near- and mid-infrared photodetectors, and solar cells. In the end, this will lead to cheaper electronic displays, like TVs, tablets, and phones. Additionally, this new, nondestructive thin film deposition technology presents a possibly much better method to manufacture flexible and wearable electronics and sensors.
Therefore, the next steps that I would see for this technology would be to identify the biggest and/or quickest to enter the market and focus on building a consumer product using these methods. Since this is a manufacturing method they developed, there are many applications that one could get distracted with; here, the new company would need to establish that they can create competitive products for less price than current methods.