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 : The *NEW* Frank Coluccio Technology Forum -- Ignore unavailable to you. Want to Upgrade?

To: Curtis E. Bemis who wrote (139)	6/9/2000 1:06:00 PM
From: gpowell	Read Replies (1) \| Respond to of 46821

You missed your calling -- the solar folks would love to see your 40% efficient photovoltaics. I think the record is 32% at NREL--in the visible; usual production variety is around 20% LOL. No, I didn't miss anything. Curtis, this is basic stuff. The efficiencies you refer to are referenced to the solar energy spectrum reaching the ground. For maximum efficiency, the absorber layer's bandgap needs to be near the incident radiation energy. Anything much less and a lot of the incident energy is lost to heat. When I used the term "solar", I meant the structure typically used for solar cells, yet tuned to a single wavelength. I've seen efficiencies > 50%, but none of these devices are commercially available.