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Started by Swami srinivasan
Fri, 10 Apr 1992 00:15
What's the max. luminescence efficiency in Si (porous)?
Author: Swami srinivasan
Date: Fri, 10 Apr 1992 00:15
Date: Fri, 10 Apr 1992 00:15
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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 center for high tech materials "If you don't care where you are, eece, univ. of new mexico then you aren't lost." swami@chtm.eece.unm.edu chumma, like! =======================================================================
Re: What's the max. luminescence efficiency in Si (porous)?
Author: ROBINSON MARYBETH
Date: Fri, 10 Apr 1992 17:21
Date: Fri, 10 Apr 1992 17:21
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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
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