18 Questions 8 Answers 0 Followers
Questions related from Jitesh Pandya
Hello all, My goal is to achieve a perovskite (cs lead bromide) film with high stabiity under humid environment? What is the standard ay I can check the PL stability of the films deposited?
12 June 2021 5,805 2 View
Hello all I have to get an SEM image for my perovskite LED device cross section but I am not able to get a clear image. It is very blurry and I am not able to get any information from there. The...
20 April 2021 9,787 6 View
Hello all, I am working on perovskite LEDs currently, . I observe that testing the LED at a voltage sweep from 1-5 V, the perovskite LED s glow once, but they eventually die down. Also I cannot...
16 April 2021 4,578 2 View
Hello all I have prepared Zinc Oxide nanoparticles using sol gel synthesis. I tried to coat the ITO and glass substrates with the ZnO nanoparticles ( dispersed in ethanol). But I am not sure if...
09 December 2020 3,955 8 View
Hello all Thanks for answering my previous questions. I am making perovskite LED and intend to use PEIE on zinc oxide layer as ETL. But I am not sure what version of PEIE to us. There is the one...
09 November 2020 5,961 3 View
Thanks a lot for your answers. I have one more question: after synthesizing ZnO nanoparticles , I am not able to separate from the original solution (dispersion actually). The recipe is as...
24 October 2020 10,131 8 View
I am following this recipe for PBABr synthesis. I added HBr (48 wt % in H2O) to Methanol and PBA solution at 0 degrees celsius. But after 2 hours of stirring I am not able to see precipitates. I...
09 October 2020 6,747 4 View
Hello all, I want to synthesize ZnO nanoparticles and PBABr in my lab for my LED project. I know the method, but I am not sure how can I check(even visually) that I have arrived at the correct...
28 September 2020 5,849 7 View
Hello all, I have to do RF sputtering for MoO3 for my LED project. But I have come across many recipes for reactive RF sputtering of MoO3 ,using Mo as a target and Oxygen as the reactive gas But...
17 September 2020 5,484 2 View
Hello all, I want to deposit ZnO/ PEIE ETL layers in perovskite LED. But the sythesisi process for ZnO is complex. I just wanted to ask if I can but ZnO nanoparticles online and if yes from...
11 September 2020 7,417 6 View
Hello all, I am currently working on Perovskite LEDs and have been selecting various layers for my device.Is there any way that I can know whether the holes and electrons are combining in the...
07 September 2020 1,120 3 View
Hello all, I want to thermally evaporate LiF and TPBi. What material boat should I use? Thank you
24 August 2020 8,303 3 View
Hello All I am tying to make a perovskite LED whcih as TPBi as the electron injection layer. Because I do not have a thermal evaporator, I do not have the option of depositing it via that...
15 August 2020 4,075 2 View
Hello all, Due to the lack of thermal evaporation capacity I cannot deposit LiF layers on the perovskite film in LEDs. Can i do RF sputtering of LiF and similar compounds instead?
13 August 2020 3,860 7 View
Hello all, I am trying to develop a perovskite LED which requires LiF to be deposited as one of the inter layer below the cathode, The paper recommends using thermal evaporation technique. I...
22 July 2020 8,746 0 View
I have come across the definition for EQE as the number of radiative recombination events out of the total number of recombination events in the LED. But is it safe to say that EQE = number of...
08 July 2020 3,319 1 View
Hello all, I have been looking at setups for the measurement of external quantum efficiencies for my thin film LEDs. According to my understanding the number of photons can be measured by the EL...
08 July 2020 6,158 5 View
Hello all, I am intending to measure the PL spectra for my perovskite samples. How can we obtain a corrected PL spectra in the spectrometer, independent of the photoresponsivity of the silicon...
30 June 2020 7,539 5 View
