Scott Pfaff is a good guy. I've actually done a bit of field herping with him, Riverbanks Zoo is a short distance from school for me. I've talked a bit with him about Uroplatus, and he's actually told me it's one of the keepers at the zoo that is the Uroplatus fanatic.
Still, you could try getting in touch with him. I'm not sure if he has actually published anything about UV exposure, but I do know that the Riverbanks Zoo is one of the institutions with the largest Uroplatus collections (I believe it's between Riverbanks and Henry Doorly Zoo) in the US. It's likely a great point to try to start getting reliable keeping information, but keep in mind that an institution like that is going to have much more in terms of resources than you'll likely be able to provide your animals. Take the best point of the care tips you get from them and make good use of them.