Solar panels convert light energy from sunlight into electrical energy. What material is most likely used in solar panels, and why? A nonmetal is used because it is a semiconductor and can become more conductive when more light shines on it. A metalloid is used because it is a good conductor but can become less conductive when more light shines on it. A metalloid is used because it is a semiconductor and can become more conductive when more light shines on it. A nonmetal is used because it is a poor conductor but can become more conductive when more light shines on it.