Meanwhile, a deep dive into the cocrystal’s behavior revealed strong charge transfer interactions between its components. The team found that it absorbed light across a wide spectrum (350–1100 nanometers), showed a marked redshift compared to its individual parts, and exhibited near-complete photoluminescence quenching – a telltale sign of efficient nonradiative energy transitions.
“Under 808 nm laser irradiation at 0.367 W cm-2, the prepared cocrystal reached an equilibrium temperature of 86 degrees Celsius within seconds,” the scientists reveal. “The PCE of 67.2 percent was calculated using a reliable method, surpassing many previously reported organic photothermal materials.”