Fig. 5: Potential applications of the narrowband deep blue afterglow from pICz-Ph/PMMA film.
From: Short-range charge transfer for efficient ultra-narrowband deep blue afterglow
a Schematic illustration of encrypted visible light communications and the corresponding coding/decoding processes. b Signal output of ciphertext generated by programmable luminescence. c Pattern of USAF 1951 test card and photographs of corresponding patterns fabricated by chromophores before and after switching off a 365 nm UV lamp. d Photographs of deep blue afterglow patterns after switching off a 365 nm UV lamp and modulation transfer function (MTF) curve of afterglow photographs. e Flicker issue comparison between conventional (blue line, 4CzIPN) and afterglow chromophores (white line, pICz-Ph). Insets show photographs of pICz-Ph/PMMA film under direct current with an on-off time of 10 ms. Source data is provided as a Source Data file.
