Emission of LIGHT when ELECTRONS return to the electronic ground state from an excited state and lose the energy as PHOTONS. It is sometimes... | Contact experts in Luminescence to get answers
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Questions related to Luminescence
I need the definite reason how the particle size decreases with increasing dopant concentration especially in metal nanoparticles.
25 January 2020 4,516 6 View
I have transgenic lines of arabidopsis expressing aequorin in the tonoplast, and am using them to determine calcium fluxes in week-old seedlings after certain treatments. The issue I am running...
18 January 2020 9,936 2 View
I know there are some poymers which will absorb light at one wavelength and then emit it at a lower wavelength but I don't know much beyond that. Can anyone point me to an article, paper or...
14 January 2020 3,042 1 View
Some articles say they are same but some of them say they are different, I am pretty confused.
01 January 2020 9,637 8 View
01 January 2020 2,298 2 View
01 January 2020 797 1 View
Most of the articles report PLQY values below %10 for systems radiates through up-conversion mechansim while down-conversion PLQY values reach up to 80-90 %. Is there a theoretical limit?
01 January 2020 498 8 View
I would like to fixate some nanoparticles in a glass cuvette and excite them with UV (355nm and 266nm) laser light, studying their luminescent properties. I tried gelantine, but this is...
20 November 2019 8,273 4 View
Most of the literature reports that I came across are vague, especially the separation process. So, I am looking for the tried and true protocols which can yield
11 November 2019 8,645 2 View
as you know, the different studies show that the shell improve the QY of QDs. I want to know that, how the shell could improve the QY of QDs?
11 November 2019 6,773 3 View
11 November 2019 7,385 4 View
Sometimes before charge/discharge Li ion half cells do measure negative OCV open circuit voltage ( ~ -1.5 V). It's very rare but did came across some of the cells. Could you please share your...
04 November 2019 6,407 1 View
Good day everyone! I am currently working on measuring ATP content from drinking water samples. Our team´s main goal by now is to achieve the best luminescent signal by disrupting as many cells as...
22 October 2019 7,002 2 View
Can water Raman signal give second order in luminescence spectrum. For instance, upon excitation wavelength of 350 nm water Raman peak is detected at 398 nm. There is another broad band at roughly...
10 October 2019 4,962 2 View
What could explain the loose of luminescence property of a mixed Copper(II)-Europium(III) complexes? Thank you
10 October 2019 8,743 2 View
10 October 2019 3,175 2 View
Well a yellow laser should be around 575-580 nm. Concurrently, mixture of green and red photons are also looks yellow. So can we call it as a laser or it will be just a high-powered yellow flash...
09 September 2019 6,105 6 View
both are about excitation , is there same?
09 September 2019 8,014 6 View
I generated these RKO Cas9 stable cell line to knock out p53 using different sgRNA (one at a time). To do that, I need to induce the expression of Cas9 with Doxycyclin. I have been using 4ug/ml...
28 August 2019 9,516 3 View
Hi, As we know the band gap as well as luminescence increase with the decrease in particle size. On the other hand, nano-phosphors exhibit better luminescence compared to its bulk ones. What are...
08 August 2019 5,523 4 View
Since using PLE carriers can be excited to the bottom of the conduction band, where they kinetic energy is zero it should be less probable to detect luminescence coming from carriers influenced by...
11 July 2019 3,537 3 View
Is it possible to view/record luminescence from luciferase on a standard confocal microscope? Some articles seem to be saying about needing a microscope with a CCD camera, is this the only...
07 July 2019 2,595 5 View
Hi, Sometimes, we observe secondary phase though very small (say 5-10 %) in PXRD pattern of synthesized luminescent phosphors wchich could be due to the purity (%) of reactants used for synthesis...
07 July 2019 4,422 4 View
Suppose I have synthesized three phosphors of a particular luminescent species in three hosts. I observed from XRD patterns that crystallinity in the three host are different and luminescence...
07 July 2019 2,314 4 View