Fig. 5
From: Enhanced interlayer neutral excitons and trions in trilayer van der Waals heterostructures
Interlayer excitons lifetime and its dependence on temperature and photocarrier injection in the trilayer heterostructure. a, b Temperature-dependent carrier lifetimes of interlayer neutral exciton (IEX1) and trion (IEX2) in trilayer heterostructure. Samples are excited with ≈9 μJ/cm2 power fluence at 1.88 eV (660 nm). c Carrier lifetimes of IEX1 and IEX2 with different temperatures at pump fluence of ≈9 μJ/cm2. The carrier relaxations are fitted with exponentials to extract the carrier lifetimes. d Time-resolved radiative recombination of IEX1 under different pump fluences at 4 K. e Carrier lifetimes of IEX1 under different pump fluences at 4 K
