Fig. 2: Origin of the two-color photoluminescence.
From: Double-crowned 2D semiconductor nanoplatelets with bicolor power-tunable emission
a Time-resolved photoluminescence decays associated with the red and green features. The experimental data are scattered points, while the solid lines are exponential fits. NPL solution is excited by a 407 nm pulsed laser diode. b Transient absorption signal for the green and red features, while the NPLs are pumped at 400 nm. c Wavefunctions of the non-interacting electron and hole ground state for a NPL with large CdSe crown. d Same but including excitonic interactions. The color scale is the same for c, d. The shared scale bar for c, d is 20 nm.
