A team of scientists from Israel, Singapore, and Switzerland has reported a major advance in the physics of perovskite solar cells ' by producing high-performance cells whose efficiency surprisingly improved as the cells heated up, in contrary to the usual drop in efficiency that occurs upon heating of a solar cell.
The researchers used experiments that varied the intensity of light and cell temperature, helping to better understand the molecular mechanisms that allow these solar cells to discharge high voltage while maintaining high current density and low internal resistance, which are essential for their superior performance. The study suggests deploying perovskite solar cells under concentrated sunlight in order to realize even higher efficiency'one of the next tasks in their planned experimental studies.