Teaching of modern physics in our country has been linked mainly to higher education levels, not in basic education or high school, it is because there is a believe about learning these principles require prior knowledge by students at this level, then it is not possible to teach them. The photoelectric effect is a case in point. In the search for alternative teaching methods to teach this phenomenon in high school, solar cells are a tool that is included in a project classroom, enabling closer to the beginning of this physics phenomenon from a perspective different to the verbal and memory, but based on the observation and direct manipulation with real elements that allow learning of concepts