Light Emitting Devices, organic and novel Message Board

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Technology Stocks : Light Emitting Devices, organic and novel

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To: kinkblot who wrote (162)	9/9/2000 11:22:30 AM
From: John Finley	Read Replies (2) of 330

Re: The dawn of organic electronics Wow, what a good review article!! OLEDs have excellent potential but some significant roadblocks to implementation. I thought I recognized the name, Stephen Forrest. Having read through some of his patents, I emailed him a while back with a question about the non-active dyes. He was kind enough to respond promptly and directed me to the folks at PANL (who were negotiating licensure of that patent, I guess, and didn't respond). Anyway, this stood out in the article: Currently, efficiencies of the best doped polymer and molecular OLEDs exceed that of incandescent light bulbs. Efficiencies of 20 lumens per watt have been reported for yellow-green-emitting polymer devices, and 40 lm/W attained for phosphorescent molecular OLEDs, compared to less than 20 lm/W for a typical incandescent light bulb. It is reasonable to predict that soon, efficiencies of 80 lm/W--a value comparable to that of fluorescent room lighting--will be achieved using phosphorescent OLEDs. Cool! JF

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