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. 2019 Jan 2;10:12. doi: 10.1038/s41467-018-07943-y

Fig. 1.

Fig. 1

Device structure and optical feature of DPA film. a Molecular structure of DPA. b UV–vis absorption spectra of DPA film. c Spectral-dependent photoluminescence (PL) decay of DPA film. d Schematic diagram of OPTs