Fig. 3: Flexibility, uniformity, and stability tests for NIR transparent film. | Nature Communications

Fig. 3: Flexibility, uniformity, and stability tests for NIR transparent film.

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

Fig. 3

a Photograph of the self-standing PMI-CBN/DBU/PMMA film. b PMI-CBN/DBU/PMMA film of different bending angles. c Cross-sectional SEM image of the PMI-CBN/DBU/PMMA films. d EDX mapping images of the PMI-CBN/DBU/PMMA films, where the capital letters of C, N, O, and B represent carbon, nitrogen, oxygen, and boron elements, respectively. e Water contact angle test for the PMI-CBN/DBU/PMMA film. f and g Humidity and temperature stability of the PMI-CBN/DBU/PMMA film. h Photo-stability of the PMI-CBN/DBU/PMMA film under 1 kW m−2 illumination. The PMI-CBN/DBU/PMMA film is prepared with 12.9 wt% doping content of the PMI-CBN absorber.

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