Fig. 3: SEPD for full-color QDs pattern arrays. | Nature Communications

Fig. 3: SEPD for full-color QDs pattern arrays.

From: Large-area patterning of full-color quantum dot arrays beyond 1000 pixels per inch by selective electrophoretic deposition

Fig. 3

a, b Fluorescence images of an array of different QD patterns under UV light (blue square pattern, green triangle pattern, and red hexagon pattern). The PL images showing aligned pixels whose resolution are ranging from 252 to 1,093 PPI (Fig. 3b). Scale bars, 200 μm. c Schematic illustration and corresponding fluorescence images of sequential SEPD red, green, and blue QDs for fabricating full-color patterns of QDs. After each SEPD process, the substrate is washed by pure solution. Scale bars, 200 μm. d, e Fluorescence images of RGB QD patterns fabricated by three-step SEPD. Figure 3e is a magnified view of Fig. 3d. Scale bars are 200 and 50 μm, respectively. f PL microscopy images of multi-color and white vertical patterning fabricated by multi-step depositing different QDs on the same electrode, which demonstrates the SEPD QD films can be stacked vertically, as well as horizontally. Scale bars, 100 μm.

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