If you look up a product called "SuperLuminova" you will find what you are looking for.
It is not specifically made for resin but it should work in clear resin, but it is colored. And probably not too cheap in the quantities you would need for any decent size piece
It is the latest generation of non-radioactive material used for watch hands and dials.
Thats what I did for my Hero panel for my Han in Carbonite. Works not too bad. Picture was overexposed with no flash..but you get the idea. It's really not as bright as it appears. Maybe more acrylic paint in the mixture..