a, b, Time-resolved photoluminescence spectra measured by a streak camera for ML MoSe2 (a) and hBL WS2–MoSe2 (b). (The hBL data are collected from a sample different from that discussed in the main text, which is not integrated with the microcavity.) The different resonances are labelled with white arrows, including the ML exciton (ML-X), ML trion (ML-T), moiré exciton at higher energy (hBL-X2), moiré exciton at lower energy (hBL-X1) and moiré trion (hBL-T). c, d, Time-resolved decay of ML-X (c) and hBL-X1 (d), obtained by integrating the spectrum in the range labelled by the red rectangles in a, b. The red solid lines in c, d are fits with a single exponential decay function. The photoluminescence decay time for ML-X and hBL-X1 is 6.7 ps and 8.0 ps, respectively.