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Technology Stocks : OLED Universal Display Corp
OLED 117.11-1.8%2:37 PM EST
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To: ZikZak who wrote (29667)12/9/2025 1:50:32 PM
From: slacker7111 Recommendation

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occams_phasor

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A new potential threat.

pTSF from Visionox is going to be into mass production. They presented on this at SID with a green material that allowed for a lower power consumption and a higher lifetime.

"Phosphor assisted" means a phosphorescent material but this material is not the light emitting part of the stack. The phosphorescent material acts to "harvest" the excitons and transfer the energy to the fluorescent material which is the emitter.

The doping percentage for the phosphorescent material is in the 5-10% range so it is possible that UDC will see little change under this architecture. The problem is that since the phosphorescent material is no longer the emitter, it is a significant step in the commoditization of the phosphorescent material. The paper indicates that the choice of phosphorescent material impacted lifetimes but is "insensitive" to current efficiency. I would guess that color is also not impacted which would mean two of the three aspects that differentiate phosphorescent materials would be removed.

sid.onlinelibrary.wiley.com.

Abstract
Phosphor-assisted thermally activated delayed fluorescence sensitized fluorescence (pTSF) organic light-emitting diodes (OLEDs) have attracted much attention and have been regarded as the fourth-generation OLED technology since its invention in 2022. In this work, through material optimization, device optimization, and process optimization, we fabricate a series of green pTSF OLED based devices and products, which realize high efficiency, long lifetime, and high color purity, manifesting the bright further of pTSF technology in mass production.

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