An engineering professor at Florida State University’s High-Performance Materials Institute (HPMI), a multidisciplinary institute dedicated to the research and development of advanced materials and manufacturing technologies, has published a paper in Advanced Materials that details a new, highly-efficient light emitting diode that is also very affordable in terms of manufacturing costs.
“It can potentially revolutionize lighting technology,” said Assistant Professor of Industrial and Manufacturing Engineering Zhibin Yu, the paper’s lead author. “In general, the cost of LED lighting has been a big concern thus far. Energy savings have not balanced out high costs. This could change that.”
Yu accomplished this new LED technology by combining organic and inorganic materials. Specifically, organometal halide perovskite and poly(ethylene oxide) composite thin films are sandwiched between indium tin oxide and indium-gallium eutectic alloy — doing this leads to a low-turn voltage and high brightness because of the ionic conductivity of the film and the formation of a p-i-n homojunction.
Ultimately, the end result is a technology that is:
• Dissolvable
• Can be applied like paint
• Shines a blue, green, or red light
• Simpler to manufacture than current products on the market
Per the latter bullet, most LED materials require four-to-five layers of material on top of one another in order to create the desired product / effect.
Yu’s approach requires just one.
Yu, who came to FSU by way of the Energy and Materials Strategic Faculty Hiring Initiative, has since received an award by the National Science Foundation to continue investigating the essential materials and establish the processing platform for the development of stretchable, active-matrix organic LED displays.
You can read the full paper in Advanced Materials, entitled Development of nonvolatile white light-emitting liquid that is coatable on diverse range of materials, here.
Via FSU
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