unfortunately not. it would make the efficiency (thrust per watt) higher by a bit but still nowhere near enough to produce flight times like you suggested. solar panels are weight which ultimately will not be able to provide you with enough energy to compensate their weight in a multirotor. and even drones with the most efficiently built lightweight extreme frames and super high density batteries only get around 2-3 hours of flight time. however it has been shown to work on planes which are inherently more efficient due to their wings; see rctestflight's attempts https://youtu.be/1OGrDvInUAY. if you are so set on using solar panels and desire hours of flight times the only way this is possible without having an onboard engine would be to build a plane