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Deuterium substitution blue, will be next generation blue materials?

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Fluorescent blue emitting material is the only fluorescent material used in small and medium-sized OLEDs and large-area OLEDs.

Development of next generation emitting materials such as TADF and hyper-fluorescence is also in progress, but deuterium substitution technology has got attention since it is adopted to Samsung Galaxy S20.

Deuterium substitution technology is to replace hydrogen with deuterium in a compound combined with existing hydrogen, and each company has a difference in substituting the compound before or after synthesis or substituting the whole. Representative development companies for deuterium substitution include Idemitsu Kosan, DuPont, SFC, and JNC.

As related patents, compounds substituted with deuterium with an atomic mass of deuterium that is twice as high as hydrogen have lower zero-energy and lower vibrational energy than those combined with hydrogen, resulting in lower ground-state energy and weaker intermolecular interactions, resulting in a thin film in an amorphous state. It is effective in improving the life of OLED.

It is expected that the OLED device to which the deuterium-substituted compound is applied can improve the lifetime by more than 20% compared to the previous one.

Galaxy S20 series, Korea’s first day of opening about 70,000 units

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The opening volume of Samsung’s new smartphone Galaxy S20 series on the first day in Korea is half that of last year’s Galaxy S10.

According to the Korean telecommunications industry on February 28, the opening volume of the Galaxy S20 series is estimated at about 70,800 units. This figure is about 50% lower than the 140,000 units of the Galaxy S10, which was released in March last year.

In the industry, the Galaxy S20 Ultra is equipped with an 108 million pixel camera, so it was expected that the S20 series, which greatly enhanced the camera function, will be in high demand.

The decrease in the opening volume of the Galaxy S20 is estimated to have reduced demand for the Galaxy S20 due to the decrease in offline visitors due to the spread of the new corona virus.