Claudiu Iaru

4 Questions 7 Answers 0 Followers

Questions related from Claudiu Iaru

How to estimate laser-induced sample heating in PL experiment?

Hello everyone. I have conducted PL measurements on CsPbBr3 nanocrystals at 10 K. I observed a significant power-dependent blueshift (~50 meV) and spectral broadening as the laser power was raised...

03 November 2021 1,953 2 View

Is it possible to find the radiative/nonradiative lifetime without steady-state conditions?

I have a set of time-resolved PL measurements, to which I applied an exponential fit to extract the effective decay time. I now want to determine the radiative and nonradiative rates involved in...

04 February 2021 7,797 1 View

How to do EDX on perovskite nanocrystals?

I want to do compositional analysis of doped colloidal CsPbBr3 nanocrystals, by STEM-EDX. However, even for short exposures, the electron beam induces carbon buildup on the sample, which dominates...

19 February 2020 5,448 3 View

How does one calculate the Huang-Rhys factor (S) with respect to the phonon displacement (Delta)?

Hello, I am trying to extract the Huang-Rhys factor S from the progression of LO phonon overtones in the resonance Raman spectrum of a material. In the configuration coordinate model, we consider...

09 January 2020 9,979 8 View