We do need to figure out how to fully recycle the precious metals and other content in solar panels. It's possible, but I don't know how hard anyone is trying just yet.
But solar panels often last 30 to 40 years, new/current ones could be even better. Shoot the ones on my roof have a full-replacement
warranty of 25 years. They typically produce more energy then it took to manufacture and ship them in
the first year or two, with pure green energy after that. Sorry if this sounds rude, but posting about solar panels as somehow counterproductive or obsolete technology is shockingly ignorant. You're going to see them on damn near every useable surface in the next 10-20 years. Solar PV just works. And by the way, it's an amazingly good financial investment for your home, also. Grid-tied PV systems have an ROI payback under 10 years in most states - free electricity for you afterwards.
And they have increased a LOT more than 0.6% in efficiency. Again, just do a 20 second google search and you can learn the truth, instead of posting fiction in here instead.