Phys.org  June 14, 2023 Little is known about the operational temperature which is critical in a solar cell’s ability to convert sunlight to free energy. Researchers in Israel analyzed the photovoltaic effect while assuming a fixed ambient temperature and a varying system temperature rather than using the standard fixed system temperature–based approaches. They studied the potential-dependent current and temperature of solar cells and thermoradiative power generators and showed that the optimal band gap of a solar cell depends on its heat-transfer coefficient and that its efficiency may rise or fall as solar concentration increases, depending on its ability to dissipate […]