Zhou Qian

10 Questions 3 Answers 0 Followers

Questions related from Zhou Qian

What's the difference between sol solvent and gel solvent to make the ZnO thin film or seed layers?

I read some papers about sol-gel method to make the ZnO thin film or seed layers. But I don't know what's the difference between using sol solvent and gel solvent to make the film?

20 July 2021 6,516 2 View

What's the difference between ZnO nanowire and nanorod for UV sensor?

I'm working on the UV sensor project. I don't know which one to choose? ZnO nanowire or nanorod? Some papers show if the diameter of ZnO be smaller, smaller surface energy will be. So, for UV...

18 July 2021 4,291 4 View

What the effect of seed layer?

I read some papers about nanowire synthesis, the seed layer (ZnO, Ag...) can be directly by taking some method onto plastic. I want to know should not the suitable lattice parameter of substrate...

14 July 2021 6,209 3 View

Why dose particle size increase through slightly doping?

I am working on Mn-doped CH3NH3PbBr3 perovskite. I measured these samples by TEM. At the smallest amount of Mn doping, the particle size becomes bigger than the pure one. But, the size will...

13 February 2021 2,575 4 View

Why lattice parameter increase initially followed by a decrease, but then again increase in case of doping Mn in MAPbBr3 perovskite ?

I am working on Mn-doped CH3NH3PbBr3 perovskite. I measured these samples by films. At the smallest amount of Mn doping, the lattice parameter increase initially. I am very confused here, the...

05 February 2021 8,056 4 View

Why perovskite thin film PLQY much higher than dispersion PLQY?

I doped Mn into perovskite. I found when up to the best doping amount, the thin film PLQY much higher than the dispersion PLQY in my experiment. I don't know what caused it, is there any theory...

05 November 2020 2,627 3 View

Is there any possible stabilize metal-doped blue-emitting light perovskite through self-assembly method?

Now, I have got a metal-doped perovskite in which blue shift happens result. I tried to make it a more blue shift to get a stable and very blue perovskite. So I think is there any possible...

05 November 2020 8,556 3 View

Why Mn2+ is very difficult to be directly oxidized into MnO2 by oxygen?

I read a paper about Mn doping perovskite, which can improve tolerance to ambient atmosphere by doping Mn2+. But I don't know why Mn2+ is very hard to be directly oxidized.

28 October 2020 1,459 3 View

Is there any relationship between crystallinity and PL indensity of perovskite?

I added the Mn dopant into the MAPbBr3 perovskite. When Mn dopant I added up to a certain amount, pl intensity can get a high result, but in the next day, the highest result I got decreased...

06 October 2020 9,356 7 View

Why PLQY of perovskite can decrease too much the next day?

I tried to use Mn dopant into MAPbBr3 perovskite, but,I don't understand why the plqy of the thin film will decrease too much in the next day and then after several days it can also get increased...

05 October 2020 3,611 4 View