Fig. 4: In situ UV-vis characterization. (IMAGE)

The Hong Kong Polytechnic University

Fig. 4: In situ UV-vis characterization.

Caption

The color mapping of in situ UV-vis reflectance spectra as a function of spin-coating time for PM6:Y6 blends with DIO (a) and with TCB (b). Normalized in situ absorption intensity at the wavelength of 600 nm (c) and 750 nm (f) as a function of spin-coating time for PM6:Y6 blends with DIO and with TCB. Normalized absorption spectra (here we defined the absorption of sample as the difference between the reflectance of background and the reflectance of sample) at representative time points for PM6:Y6 blends with DIO (d) and with TCB (e). Source data are provided as a Source Data file.

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© 2023 Research and Innovation Office, The Hong Kong Polytechnic University

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