Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : OLED Universal Display Corp -- Ignore unavailable to you. Want to Upgrade?

To: tech101 who wrote (29425)	4/9/2025 5:08:41 PM
From: STA2015	1 Recommendation Recommended By litespeed2011 Respond to of 29721

I cannot find UDCs Blue emitter lifetime but here are a few articles. The Blue Problem: OLED stability and Degradation Mechanisms Jan 23, 2024 Another report disclosed a device with a LT95 of just under 500 h (LT50 of 8000 h) and an EQEmaxof 11.9% with a different pyrene-based compound as the emitter ( Figure 2b) and CzPA( Figure 3b) as the host in a TTA-UC system UBI: Samsung to delay the introduction its first blue phosphorescent AMOLDs to the second half of 2025, Nov 2023 UBI says that the blue OLED still suffers from low lifetime - the lifetime of the blue PHOLED stack is only 55% of the lifetime of its current fluorescence-blue stack. From an ACS Pub dtd Aug 2018 …a Blue Fluorescent Blue light emitter had a LT50 >30,000 hrs. I do not know if this was used by UDC. Chemical Engineering Journal, 22 Dec 2022 …blue PhOLEDs exhibited maximum external quantum efficiency of 20.9%, color coordinate of (0.16, 0.29), and device lifetime of 13,573 h at 100 cd m-2, which was 4.2 times longer than that of state of the art blue device. Furthermore, the optimized blue PhOLEDs demonstrated device lifetime longer than 25,000 h, which is one of the longest device lifetimes of blue PhOLEDs without any sensitization or outcoupling enhancement.