original article: https://news.rice.edu/2019/07/12/rice-device-channels-heat-into-light/ https://news.rice.edu/2019/07/12/rice-device-channels-heat-i... Sounds

original article: https://news.rice.edu/2019/07/12/rice-device-channels-heat-into-light/ https://news.rice.edu/2019/07/12/rice-device-channels-heat-i... Sounds like 80% is a theoretical prediction for this method, not an experimental result: Naik said adding the emitters to standard solar cells could boost their efficiency from the current peak of about 22%. “By squeezing all the wasted thermal energy into a small spectral region, we can turn it into electricity very efficiently,” he said. “The theoretical prediction is that we can get 80% efficiency.”