Fig. 4: Origin of the power-dependent spectra.
From: Double-crowned 2D semiconductor nanoplatelets with bicolor power-tunable emission
a Integrated PL intensity of the green and red features as a function of the incident power. Measurements are conducted in micro-PL configuration with the selection of emission from waist region. Power laws with exponent 1.03 and 0.54 are used to fit the green over the whole power range and the red feature for the energy range above 1 µW, respectively. b Ratio of the green over red integrated PL signal as a function of power at room temperature and at low temperature (T = 4 K). c Time-resolved green photoluminescence under various incident powers. d Time-resolved red photoluminescence under various incident powers. e Duration to reduce the PL signal by a factor of 10 for the green and red features as a function of the incident power.
