Help identifying CSUN solar cell and how to use it (preparation, setup etc.)
I wonder if these are ruggedized panels with a diffusion polysilicate layer used for roads recently. https://www.polyu.edu.hk/cpa/greendeck/pdf/14_Prof_HX_Yang_Research_and_development_of_solar_PV_pavement_for_application_on_Green_Deck.pdf

The best way is to test for Voc and Isc.