heterobilayers

We present the optical signatures of trions coupled to moiré potential in WSe₂/MoSe₂ heterobilayers. The moiré trions exhibit highly irregular and sharp emission lines with complex charge-density dependence, in stark contrast to the behavior of conventional trions. We infer distinct contributions to the trion emission from radiative decay channels in which the remaining carrier resides in different moiré minibands. The complex moiré trion features motivate further theoretical and experimental studies on trions in moiré superlattices.