The OLED breakthrough could lead to cheaper phones, TVs and monitors

Briefly: Researchers from Pusan ​​National University in South Korea are close to creating viable, solution-cured organic photodiodes (OLEDs) that don’t skimp on durability or efficiency. In other words, affordable OLED-equipped devices such as smartphones, TVs, and monitors may not be that far away.

as researchers Explain, the current OLED production is expensive and labor-intensive. Solution-cured OLEDs promise to be affordable but have so far been limited by efficiency and durability issues due to manufacturing difficulties.

To circumvent the problem, the researchers synthesized and characterized a bondable hole injection layer (HIL) material that has a solvent resistance of more than 99 percent, and fabricated a red phosphorescent solution-cured OLED using it.

The team said that the new HIL material possesses an optimal energy level as well as high mobility and excellent film-forming properties, which are essential for commercial viability. In fact, according to Professor Do-Hoon Hwang of Pusan ​​National University, the material has achieved greater efficiency and longer life compared to the most widely used HIL materials.

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OLEDs have been around for decades, with the first practical device dating back to Eastman Kodak in 1987. The main applications were still several years away, and it wasn’t until 2007 that the first OLED TV would hit the market in the form of Sony XEL-1.

The Sony screen measures just 11 inches diagonally and has a resolution of 960 x 540 which means that it technically didn’t even qualify as an HDTV. It debuted with an MSRP of $2,499 and was more of a tech demo than something you’d actually buy for everyday use.

Only recently have OLEDs begun to gain more mainstream adoption as the price has dropped from the stratosphere. OLEDs provide much better picture quality compared to LEDs. They’re also generally more energy efficient, weigh less than their LED counterparts, and have superior response times.

search paper About this was recently published in the Journal of Chemical Engineering.

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