Fig. 2: Preparation and optical properties of NIR transparent film. | Nature Communications

Fig. 2: Preparation and optical properties of NIR transparent film.

From: Ultrathin near-infrared transmitting films enabled by deprotonation-induced intramolecular charge transfer of a dopant

Fig. 2

a Schematic representation of the preparation of the PMMA films of PMI-CBN/DBU. b, c UV–vis–NIR absorption and transmittance spectra of the PMMA films of PMI-CBN and PMI-CBN/DBU. d Photographs of the two films as prepared. e Transmittance spectra of the PMI-CBN/DBU/PMMA films with varying doping ratios of PMI-CBN absorber. f Plots of the transmittances recorded at 480 and 1200 nm versus PMI-CBN absorber doping ratios. g Photographs of the PMI-CBN/DBU/PMMA films with doping contents varied from 0 to 18.2 wt%.

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