Fig. 8: Multi-responsive multicolor luminescence for multidimensional dynamic displays and multimodal sensing.
From: Dynamic multicolor emissions of multimodal phosphors by Mn2+ trace doping in self-activated CaGa4O7
a Illustration of the preparation process for solar-shaped composite films. Two phosphors, CaGa4O7:Mn2+ (I) and NaNbO3:Pr3+ (II), are embedded in Region I and Region II, respectively. b Photographs of the prepared composite film (top left), showing its flexibility (top right), water-immersion stability (bottom left: bright-field image and dark-field PL), and thermal stability up to 573 K (bottom right). c Time-dependent multicolor PL patterns excited by a handheld 254 nm lamp. d Temperature-dependent multicolor PL patterns and thermally boosted emission. e “LUMINESCENCE” ML patterns triggered by handwriting letters in Region I of the composite film. f Dependence of the CIE chromaticity coordinates on photoexcitation time (0.5–8 s, indicated by blue triangles) and temperature (298–573 K, indicated by gray circles). g Dependence of the emission intensity ratios of I579/I474 on temperature. Source data are provided as a Source Data file. h Pressure mapping of the handwritten “L” trajectory. Scale bars = 10 mm.
