Scientists have demonstrated 'multielement ink' -- the first 'high-entropy' semiconductor that can be processed at low-temperature or room temperature. The new material could enable cost-effective and energy-efficient semiconductor manufacturing.
Semiconductors are the heart of almost every electronic device. Without semiconductors, our computers would not be able to process and retain data; and LED lightbulbs would lose their ability to shine.
The advance takes advantage of two unique families of semiconducting materials: hard alloys made of high-entropy semiconductors; and a soft, flexible material made of crystalline halide perovskites. To overcome this hurdle, Yang and team then leveraged the unique qualities of a well-studied solar material that has intrigued researchers for many years: halide perovskites.
Because of their ionic bonding nature, halide perovskite crystal structures require significantly lower energy to form as compared to other material systems, explained Yang. Stability at ambient temperature has long been a problem for advancing commercial-ready halide perovskites, but in a benchtop experiment for the new study, the high-entropy"multielement ink" halide perovskite surprised the research team with an impressive ambient-air stability of at least six months.
"One can imagine that each of these octahedral LEGOs could carry some type of 'genetic' information, just like DNA base pairs carry our genetic information," Yang said."It would be quite fascinating if one day we could code and decode these molecular LEGO semiconductors for information science applications."
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