🚀 go-pugleaf

In article <qhsj0+c@lynx.unm.edu> swami@chtm.eece.unm.edu (Swami srinivasan) writes:
>have yetanudder question...
>
>	What is the max. (optically pumped) luminescence efficiency
>achieved in porous Silicon so far? Last i heard (a couple o' months
>ago) it was about 1%. 
>
>	There was quite a lot of excitement last fall, hope it hasn't
>died down. Also heard of a result from Munich - they observed 
>electroluminescence, but strangely, there was light emission with
>both biases! 
>
>	Wonder if there are any explanations for this phenomenon.
>
>						               swami 
>=======================================================================
>swaminathan srinivasan
>swami@chtm.eece.unm.edu				chumma, like!
>=======================================================================

I am not sure what the latest reported max efficiency for PL Porous Si
is, but I can assure you that the excitement from last fall
has not died down any.  I would,in fact, like to see this topic
discussed more on this bboard.

I am currently working with Steven George at University of Colorado,
Boulder, studying correlations of surface chemistry (studied via
transmission FTIR) with photoluminescence properties.  Our work thus far
(as presented at the fall MRS meeting in Boston) has centered on
correlating hydrogen coverage, and thermal annealing with PL.  

I would be very interested in hearing from other people on the net who
are studying porous silicon.  I enjoyed the lively debates at the MRS
and would like to see them continue here!


MB



-- 
MaryBeth (MB) Robinson    		robinsmm@ucsu.Colorado.edu
Department of Chemistry
University of Colorado