www.pnas.org
Color-neutral, semitransparent organic photovoltaics for power window applicationsWe demonstrate a semitransparent organic photovoltaic cell that achieves a power conversion efficiency of 10.8% and visible transparency of ∼50% using a nonfullerene acceptor (NFA) featuring strong near-infrared (NIR) absorption and simple synthesis. Contrary to expectations, stronger NIR absorption and closer molecular packing are obtained by employing an additive in these partially, instead of fully fused, rigid NFAs. By combining NIR-absorbing material sets with an optical outcoupling structure as well as transparent electrode, we overcome the trade-offs between efficiency, transparency, and device appearance. These results surpass other semitransparent solar cell technologies based on organic and other thin-film materials systems, showing a promising future for ST-OPVs as power-generating windows and other solar energy harvesting applications.
All study data are included in the article and [ SI Appendix ][1], including cyclic voltammetry measurements, genetic algorithm calculations, and synthesis details.
[1]: https://www.pnas.org/lookup/suppl/doi:10.1073/pnas.2007799117/-/DCSupplemental
Perhaps an idea for the next generation of Aptera after more development resulting in a higher efficiency. The lack of complete transparency (Important for safety in a motor vehicle and currently illegal for windshields and probably side windows) and and low efficiency identifies this technology as a "Watch" for future incorporation in an advanced, next generation Aptera.
https://www.inceptivemind.com/carvey-ehren-maigue-aureus-solar-panels-renewable-electricity/16348/
this can capture light at not ideal angles and redirect much of it toward on smaller area where small solar panel gets the solar. it can be lined along body panels and the small surface area solar output can be at the window area, to minimize any need to have holes in chassis body panels. this can be on windshield and windows too, also serving as some level of window tinting
this can also transport light from a light LED strip sort of like optic fiber, which can be used for aesthetics options to sell in future models, or whatever. it can be used for the stabilizer wing concept (https://www.aptera.us/forum/main/comment/60a5c5f27e882b001500a9bc) , as turn signal indicators that can be seen by both driver in car and outsiders, which would free inside screen surface area for displaying other graphics besides turn signal indicator, something especially important when the screen is a small one and other data is competing for space (for ex. when applying the concept of using drivers phone rather than built in screen, b/c its cheaper
I posted this on another board. Just now finding this board : I found this APtera forum after watching an investment Youtube channel. They did a segment on Solar Window Technologies https://www.youtube.com/watch?v=LQHcTSn3Ync where they claim they can"TRANSFORM ORDINARY SURFACES INTO ELECTRICITY GENERATING PRODUCTS" Would Aptera reach out to see if their product might work here?
Instead of the solar cells on the windshield, the solar cells are on the dashboard 😀
Interesting, but this wouldn't be usable on the front windshield of a car, if that's what you are suggesting. It's illegal in most places to have a tinted front windshield, and this "solar window" would be considered tinted because it only has 50% transmission. It may be nice for the rear hatch though, to be able to see through it and still get some solar power. Still, the devil is in the details - e.g. operating temperature range, durability, compatibility with automotive safety glass?
The existing hatch's opaque cells are much more efficient, & with a rearview camera there's no need for it to be transparent.
Yes, pleas for rear hatch.
https://www.golem.de/news/akkuforschung-wie-lithium-akkus-noch-mehr-energie-speichern-sollen-2101-153143.html
The next generation of Perovskite Silicon Solar Cells for Aptera:
- inexpensive
- efficient
- 100 times thinner
- Efficiency level at 29.1 percent
- without lead
https://www.nature.com/articles/s41563-020-00826-y.epdf?sharing_token=eQhRb72pd-4kPva_-1V4_NRgN0jAjWel9jnR3ZoTv0ODB1rFjJvTknk7nBSSIQLmQKvA6DaxQONOvpWGAzCgqXTjbkMEtnwXB4QpC24sQmkvCnIZl4_BurDaqnGP753fBWLOiU6ClzMJKBdS51lquWtPk5RNMTPLMP91HjL3V3ZXHJ17T_wRG6vKtWjsAqjz8uzIcbUN_2jjvjjFui2t4h7cw5-JhO7uQRHj5YKcjx8n6gNZiPHpZ0Mr-1sMKupY_UVYpP7VL0vcUEDw1Ju3Eyxinv676WcstuWIq_SkWkrK4L_HlzB5QHaL2JEagykMkOkHP8_X5LJllnwf1rBlvk_NoxpXaPoeeWUeMkEYVLE%3D&tracking_referrer=www.independent.co.uk&utm_medium=affiliate&utm_source=commission_junction&utm_campaign=3_nsn6445_deeplink_PID7988998&utm_content=deeplink
WOW! I want that for my HOME windows!