Here is a clue for the clueless solar panels are manufactured from various materials. Plants are living organisims. Your comparison is a false one and a failure.
Also for your general information solar panels do not produce electricity they transfer solar energy to batteries.
Yes they grow plants on the iSS and protect them from direct exposure to radiation and sunlight unless they are attempting to sudy the effects of said direct sunlight.
It is you saying stuff which is irgnorant and without any bassis in science.
Try alibrary for your ignorance in both anthropology and science
NASA - Habitation Systems Project - NASA's Deep Space Habitat
Perhaps you should read up on where we are at before making predictions about what cannot be done. NASA has been doing various space habitat studies for decades.
This should interest you since you're concerned about food. NASA - LED Lights Used in Plant Growth Experiments for Deep Space Missions
We use semi-closed nuclear systems on submarines, or maybe the are fully closed, don't know that much about their power plants, since the 1950s. Really think it is that hard to add cooling tubes to reclaim the water and re-use it? Nuclear reaction causes heat, heat turns water to steam, steam turns turbines, turbines turn generators, generators make electricity. Recycle the water and repeat. Not to mention lots and lots of room for solar panels without the atmosphere soaking up energy or reflecting back into space.
Recycling water is easy, heat until turned to steam, run steam through cooling loops, you get distilled water. Put in a lead lining to block radiation and you probably could recycle water while generating electrical power.
Those plants up there that they can grow with LEDs need fertilizer. Well, what do you know, what comes out of us after eating plants contains a lot of what those plants need. So after separating out the water, burn or heat to level to kill bacteria, feed to plants.
Oxygen, hmm, lets see, humans and other animals take in oxygen, give off CO2. Plants take in CO2 and give off oxygen. Guess they need enough plants to augment the scrubbers.
Bone density problem is easily solved by generating a sort of artificial gravity, kind of like a hamsters wheel. Just make sure everyone spends enough time in there.
Be sure to work hard and get lots of overtime. People on welfare want more steaks and free upgrades to smart phones with unlimited data packages.
Anyone wondering what I'm talking about start here:
The Psychology of Persuasion
I believe it may simply be a lack of equal pay for equal work, and that form of social dilemma.