Fig. 2: Highly directional white-light emission. | Nature Communications

Fig. 2: Highly directional white-light emission.

From: Directional white-light emission from sintered carbon dot titanium dioxide structures based on near-field confinement

Fig. 2

a Side and b front views of the emitted white light from the CDot-TiO2 composite under the NIR light excitation in air. c The solid angle of the light emitted from the CDot-TiO2 composite when excited by the NIR light (only the emission with an intensity higher than 0.5 W/cm2 is shown). d The spectrum of the emitted white light. The white-light emission from the CDot-TiO2 composite (e) when applying the excitation NIR light repetitively (10 s on then off) or f intermittently every 10 days within 100 days. The red and black lines/dots in (e, f) denote the intensities of the emitted white light and the excitation NIR light, respectively. The insets in (e, f) are the images showing the emitted white light in different periods of time.

Back to article page