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. 2021 Jul 5;33(33):2102451. doi: 10.1002/adma.202102451

Figure 3.

Figure 3

Reflective structural color images based on UV‐patterned PEDOT on Al/Cr/Au mirrors. a) Schematic process flow of the UV patterning technique. b) Designed grayscale patterns with separate pixels and gradient bars (top), photographs of printed photomasks (middle, set #2, set #1 and #3 are shown in Figure S13, Supporting Information), and corresponding transmittance of pixel A‐D at 405 nm (bottom). c–e), UV‐patterned PEDOT devices using the printed photomask set #2 at different UV exposure times (1, 6, and 10 min). The polymerization time was 30 min. The first, second, and third rows are device images, CIE pseudocolors, and reflectance curves, respectively. The different pixels (A to D) are indicated in both device photographs and CIE generated color images. f–h) UV‐patterned PEDOT devices made using gray‐scale photomasks of one of the co‐authors (f), a cat (g), and an eye (h). The image of the author in (f) appears here with their consent. The different images in (f) correspond to different UV exposure and polymerization times using the same photomask, showing the possibility to tailor the structural colored images.