The paper: <a href="https://www.sciencedirect.com/science/article/pii/S0927024825001904" rel="nofollow">https://www.sciencedirect.com/science/article/pii/S092702482...</a><p>I think these problems are easily solved. Put it inside the orbit of the earth instead, so you need far less material, and have the panels fold their wings when they would transit the sun from the viewpoint of any planet. Silicon won't work at higher temperatures, but plenty of other semiconductors are available, including many that are good insulators at Earth room temperature. The paper erroneously assumes that semiconductor bandgaps don't vary with temperature, but in fact they vary dramatically, permitting efficient photovoltaic energy conversion with exotic materials even at much higher temperatures than ours.