Intro to TCSPC - Time Correlated Single Photon Counting - by Jeff DuBose

!!Note: Typo at 1:58 -- the quantum yield equation should be: Φ = k_r / (k_nr + k_r)
An introduction to the theory, instrumental set-up, analysis of data, and a few literature examples of time correlated single photon counting (TCSPC) with applications in nanomaterials (quantum dots). TCSPC is a subset of time resolved photoluminescence spectroscopy (TRPL) or just "PL decay".

[@Xxxyze]

Very informative! It's a fantastic talk! Thank you!

[@maryeide2812]

Great presentation. Very informative and well thought out.

[@afakethrum]

Great talk. Much obliged.

[@masoudaminzare5712]

Very nice and handful. Thanks a lot

[@haticetuncer1700]

Thank you.

[@ranimolmathew4056]

It is really helpful

[@mishikavirmani2134]

A VERY BIG THANKS!

[@mclovinami]

THANK YOU SO MUCH !!!!

[@sanjibthakuria9760]

Thank you

[@gob7768]

Does the electronics of TCSPC actually measure a single photon? Enlighten me please. I'm curious about this for a long time. I saw that "single photon" may be defined for a group of pulses. In the last your paper, have you compared the use of "% normalized pre-exponential A1 and A2" vs. "F1 and F2"? where Fi = 100*[αiτi/Sum(αiτi)] PS. Thanks for sharing the presentation

[@anupsinghania7290]

I don't understand how to calculate the life time..I understand the process about the fitting...how can we get the life time value?

[@dks-lq1qm]

i have a doubt for quantum yield u wrote number of photons emitted/number of photons absorbed then it should be radiative rate divide by total rate right..?, i am not sure on this, but can u please explain it.

[@kamatlab8646]

Good catch - there was a typo in the equation. Thank you for pointing that out. We've added a note to the video and a comment in the description.

[@themotivatedloser2443]

Sir, why is there a peak in your Prompt. Any explanation for this?

[@ritacarrotta643]

Is the QY correct? I think it is Kr/(Kr+Knr), isn't it?

[@jacobvandijk6525]

If single-photons are hard to detect (9:09), how can you be sure you send in a single-photon (9:33)?

[@JeffreyDuBose-kb2rz]

You can never be 100% sure, but in practice we restrict the number of photons going to the detector with either an aperture or a neutral density filter, so that way if a photon comes into the sample, statistically it should likely come from a single photon But the issue of multiple photons coming in and causing pulse pile-up is always something we want to avoid

[@jacobvandijk6525]

@@JeffreyDuBose-kb2rz I'm not convinced, but thanks for trying anyway.

[@maxmustermann2707]

You often say "again"

[@v.g.vasavidutt1421]

Thank you