Professor Andrew Blakers and Professor Ricardo Rüther (UFSC) have written an article on solar panel waste streams on behalf of the International Solar Energy Society, which can be accessed here.
Although there are some short-term issues in certain localities due to the lack of recycling policy and infracture, this will be a short-lived issue. And emissions reductions from wind and solar will displace more than 1000 times the waste of the renewables.