Yes and no, all solar panels can work without the sun but they mainly would not work without sunlight.
No. Solar panels require light to work. The closest type of passive energy collecting device is a thermocouple, which generates electricity via a temperature differential. But it requires a cold and hot source to operate, while a solar panel only requires light. Good luck!
No. Solar literally means Sun. But...scientists are working on a panel that can absorb energy after the sun has set. It may be years until we see any commercial success.
There cannot be a solar panel which works without sun light. But solar panels can work without sunlight. For example you would have seen the battery less calculators which work on solar power. they work in the night too with enough light coming from the bulbs in the room. So the answer to your question in yes. But for generating power we have to have a source which is free and we cannot put the panel in lighted area, which will make is not economical since the nett power obtained will be negative.
