Coming to a Monitor Near You: A Defect-free, Molecule-thick Film
November 27, 2015 | University of California - BerkeleyEstimated reading time: 2 minutes
MoS2, specifically, is characterized by molecular layers held together by van der Waals forces, a type of atomic bonding between each layer that is atomically sharp. An added benefit of having a material that is so thin is that it is highly electrically tunable. For applications such as LED displays, this feature may allow devices to be made where a single pixel could emit a wide range of colors rather than just one by varying the amount of voltage applied.
The lead authors added that the efficiency of an LED is directly related to the photoluminescence quantum yield so, in principle, one could develop high-performance LED displays that are transparent when powered off and flexible using the "perfect" optoelectronic monolayers produced in this study.
This treatment also has revolutionary potential for transistors. As devices in computer chips get smaller and thinner, defects play a bigger role in limiting their performance.
"The defect-free monolayers developed here could solve this problem in addition to allowing for new types of low-energy switches," said Javey.
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