Which pervoskite has the best Photoluminescence properties among lead free based pervoskite materials.
Can you be more specific. It depends very much on the wavelength you want to produce.
Someone actually voted down my response and didn't even bother to make a comment? The question cannot be answered without knowing the range of wavelengths that are of interest. If someone disagrees with this post a comment explaining rather than just anonymously voting down a comment from the shadows.
Lawrance,
You are right. I think that it is the minimum to have a precise question to get a correct answer!
sorry for my question framing!
my interest is doping of rare eaerth into lead free based pervoskites for observing luminescence properties.i would like to know the which pervoskite material have supporting for best luminescence properties enhancement?
GGG (Gadolinium Gallium Garnet) doped with Tb or Eu is the best phosphor material I know of. The emitted light is around 500 nm depending on the rare earth that is used.
GGG is indeed a good phosphor host, but generally most suitable it's for Ce3+. Also it's not a perovskite.
If you want to dope with any trivalent rare earth I'd strongly suggest molybdates. They are very good hosts for Eu3+ and I expect for the other RE3+ as well. There are quite some double-perovskite molybdates that you could use.
The only limitation is that you cannot get Ce3+ to luminesce in these as a metal-to-metal charge transfer from Ce3+ to Mo6+ will quench the luminescence.
So for Ce3+ you could use YAlO3. It's perovskite structure as well.
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