No, they are by no means carbon neutral. It takes a lot of energy to produce them, and you also need some metals, including stuff like cadmium which is high toxic and polluting. There are still big obstacles to overcome before solar PV is "perfect". However, it is much better than most other form of energy production both in terms of carbon emission and pollution emissions. The batteries are also extremely unfriendly to the environment, but this area is something that many companies are trying to improve.

Thanks for your comment! I actually attended a seminar about this topic a year ago, so it would be very interesting to take a look at it and make a post about it. However, it all depends if I'm able to find the sources used :P