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Non-Tech : Auric Goldfinger's Short List -- Ignore unavailable to you. Want to Upgrade?

To: rupers who wrote (8070)	8/3/2001 10:26:51 AM
From: Sir Auric Goldfinger	Read Replies (5) \| Respond to of 19428

Thnx re PANL, kinda thin, but will put evilresearch.com to work on it.

To: rupers who wrote (8070)	8/4/2001 5:02:50 PM
From: J John Blankier	Respond to of 19428

Silicon Investor Speculations (Wrong) by: occasional_risk 08/04/01 11:14 am Msg: 20245 of 20252 I perused the SI board last night. A post questioned whether the IBM news was a negative for UDC, suggesting that the pentacene project meant IBM would compete on OLEDs. Without a paid membership, I didn't answer. The IBM OLED projects of which I'm aware focus in hole and electron transport layer optimization. They've also clearly worked on OTFTs. They apparently get materials from EK, but I don't know how closely the two organizations work together. Questions: 1. I don't recall seeing that IBM makes displays. Anyone know whether they have in the past or would want to make them? 2. The Mark Fihm (sp?) presentation that Steve (panlstl) cited has IBM partnered with Kodak. Anyone know how close is the partnership? I'd like to think that IBM would consider working with UDC, but I suppose that depends on how well OVPD and the emitters turn out. Then again, all the small molecule outfits will gravitate to the best emitters and the best production process. UDC "simply" has to be the clear best when it nears time for production. (I wonder about lifetimes and blue purity - no news for some time.) messages.yahoo.com Re: Could OVPD Be Used to Form IBM's OTF by: princetontech 08/03/01 07:55 am Msg: 20172 of 20252 OR, let me just say this, the purity of the pentacene is not that greater of an issue than say the purity of say Firpic or Iridium - your emitters and OVPD is a MUCH cleaner system. Metallic contacts can be put on in various ways including phase or flow deposition. IMO the IBM treatment helps facilitate OVPD more readily than nearly any other process out there. It can simply be incorporated into the web process. messages.yahoo.com Could OVPD Be Used to Form IBM's OTFTs? by: occasional_risk 08/02/01 11:01 pm Msg: 20166 of 20252 I've been wondering for awhile whether OVPD could be used to make the entire OLED, backplane and all. As near as I can tell, the answer is no. The metallic contacts, in POEM's own diagrams, are the result of sputtered metal with a cold-welded pattern. As for single-crystal pentacene TFTs, the IBM group did this: "Pentacene was deposited from a quartz crucible heated to 250 °C. Clean material was obtained by carefully outgassing the pentacene in ultrahigh vacuum before deposition. Without this procedure, charge traps were introduced into the pentacene film as observed with LEEM [low-energy electron microscopy]." A critical issue would be whether the ultrahigh vacuum is necessary to make pentacene sufficiently pure that it crystalizes in the desired fashion. (Charge traps would limit the device.) Are there other ways to purify pentacene, so that it could be deposited using an OVPD?