Talk:Exciton
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[edit] biophysics
Exciton is a term no longer used in biophysics. Instead, the designation "Resonance Energy Transfer" refers to the fact that photonic energy is transferred along several pigments without an electron being tranferred (donated to a receptor), as is the usual case. This situation is interpreted as serving to "funnel" photonic energy to the "central chlorophyll pair," which donates the energy-laden electron to the first cytochrome electron-receptor in the chain to generate NADP. The pigments acting in this peculiar way are considered to be "excited" by way of a electromagnetic mechanism. Ghitis 2004-08-31T15:55:02
[edit] web copies
To the person who alleged this article was copied from [1]: it's the other way around. There are all kinds of sites that use content from Wikipedia, and it's probably legal. Tantalate 22:29, 14 Aug 2004 (UTC)
[edit] quality
The quality of this article is overall a bit low. The importance of the momentum (k) vector of electrons and holes in the exciton as well as bound excitons are not sufficiently elaborated. —Preceding unsigned comment added by 91.153.147.139 (talk) 15:37, 12 March 2008 (UTC)
- OTOH, to point out the problem on the opposite end of the continuum:
- "An exciton is a quasiparticle consisting of a bound state of an electron and an imaginary particle called an electron hole in insulators and semiconductors, and in some liquids. As such, it is a Coulomb-correlated electron-hole pair with no net charge. It is an elementary excitation of condensed matter characterized by a period lattice structure. The bound electron and hole pairs provide a means to transport energy without transporting net charge."
- I've a Ph.D., a high IQ, some liking of scientific subjects, and a mild interest in particles, and I couldn't tell a soul what more than a few words or phrases in this sentence mean. I realize that a complex topic can only be boiled down so far, and it's not as if we were on Simple-English Wikipedia, but still ... can we aim for at least the first paragraph to be somewhat comprehensible to the interested layperson? I hit this article via "Random article" and after moving on, came back because I was curious to know what this particle I'd never heard of might be. I still have no clue. Lawikitejana (talk) 21:46, 21 July 2010 (UTC)
[edit] Correct attribution of the figure
In case anyone is interested, the image shown on this page was not created by Mark Wolverton at Argonne National Laboratory. This image was created by the research group of Peter Abbamonte, in the Physics Department of the University of Illinois at Urbana-Champaign, using facilities at the data visualization lab at the Beckman Institute. The "permission" section in the file description, which says this image is a product of a DOE lab, is incorrect. —Preceding unsigned comment added by 98.212.199.197 (talk) 04:27, 2 March 2011 (UTC)
[edit] Exciton creation
The introduction should be corrected. Excitons can be formed by charge injection into a Quantum well not just by absorption of a photon. —Preceding unsigned comment added by 131.111.185.2 (talk) 14:27, 30 March 2011 (UTC)
