Solar Panel Materials Toxicity
Discussions center on the use of toxic and scarce materials like cadmium, lead, and perovskites in photovoltaic panels, including concerns about environmental impact, recyclability, degradation, efficiency, and comparisons to safer silicon-based panels.
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Citation needed. Is this with photo-voltaic cells built with dangerous and scarce materials?
Does this affect solar cells and the like?
There are few questions:- photovoltaic cell degradation (which, beside external breakage, is the cause of recycling): so far it seems that cells degrade very slowly, 30 years and still 80% original power- manufacturing: if everything is melted/glue/fused .. it's hard to recycle. Maybe that's not a physical necessity but just old practice- silicon purification is said to be a energy hog, and uses lots of various Cl based acids. Some say these acids are handled properl
Which rare elements do mass produced PV panels need today?
Aren't current solar panels using perovskites as well?
Mass-produced PV panels contain hardly any heavy metal. Some of them contain lead in the solder but this is avoidable. Most of the noise is about cadmium, but you will note that CdTe thin film panels enjoyed brief market success before being stomped again by the irresistible decline of the price of Plain Old Silicon. Even CdTe panels are basically inert, coming from the factory as a stable, insoluble glass. If you read the research papers about the possibility of cadmium pollution in soil from C
Perovskite cells still don't make much sense for the majority of applications (and I suspect they never will): they're expensive, generally use toxic materials, and degrade much more quickly than silicon panels. Silicon panels are cheap, non-toxic, and long-lasting and plenty efficient enough for 90% of use cases.
Same for panel efficiencyhttps://en.m.wikipedia.org/wiki/Solar-cell_efficiency#/media...
Late comment on this: saw a short talk by Dr. Eisele at a regional APS conference a few weeks ago on some research aimed at a future non-silicon based solar panels that are easy and cheap to manufacture but also do not lose efficiency at higher temps (as is common with current panels)* Her group apparently is at patent stage on some newer, follow-on research.ref: https://www.nature.com&#x
Lots of big jumps in the article and the devil is in the details. Solar panels have seen a lot of innovation in the last few decades. Simply pumping out tons of 30 year old technology may have stunted that progress or even created so much waste that solar could have been deemed as non-viable. Some panel technologies are really hard to recycle but have held a performance edge at different times in solar tech development. Sometimes going all-in on mass production of something is not worth the shor