Fig. 1: Photoluminescence spectra and band alignment of donor and acceptor molecules. | Nature Communications

Fig. 1: Photoluminescence spectra and band alignment of donor and acceptor molecules.

From: Observation of aligned dipoles and angular chromism of exciplexes in organic molecular heterostructures

Fig. 1

Schematic chemical structures of a m-MTDATA and b T2T molecules. c Normalized LCM PL spectra of m-MTDATA (black curve) and m-MTDATA/T2T bilayer (blue curve) thin films at 290 K. The PL peak due to the XP was observed at 2.16 eV. d Energy-band alignment with HOMO and LUMO levels of m-MTDATA and T2T films and the formation of photoinduced CT exciton between m-MTDATA donor and T2T acceptor (i.e., XP). The HOMO and LUMO levels were estimated by using UPS and optical absorption spectra.

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