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.

📉 Falling 0.3x Science
2,353
Comments
19
Years Active
5
Top Authors
#8858
Topic ID

Activity Over Time

2008
20
2009
19
2010
26
2011
33
2012
42
2013
58
2014
67
2015
81
2016
78
2017
134
2018
124
2019
187
2020
169
2021
245
2022
375
2023
234
2024
256
2025
196
2026
11

Keywords

www.nrel ucsusa.org MARGINAL insideclimatenews.org APS UV PECVD MO EDIT CdTe solar panels cells solar panels silicon pv panel manufacturing degradation materials

Sample Comments

jules May 30, 2011 View on HN

Citation needed. Is this with photo-voltaic cells built with dangerous and scarce materials?

RenRav Aug 1, 2019 View on HN

Does this affect solar cells and the like?

agumonkey Dec 24, 2018 View on HN

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

davedx Jun 25, 2017 View on HN

Which rare elements do mass produced PV panels need today?

misja111 Aug 9, 2024 View on HN

Aren't current solar panels using perovskites as well?

jeffbee Apr 22, 2023 View on HN

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

nicoburns Apr 29, 2025 View on HN

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.

gloflo Dec 20, 2024 View on HN

Same for panel efficiencyhttps://en.m.wikipedia.org/wiki/Solar-cell_efficiency#/media...

beezle Apr 26, 2025 View on HN

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

imoverclocked May 23, 2024 View on HN

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