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. 2021 Dec 13;14(24):7688. doi: 10.3390/ma14247688

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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PL spectra of AZO layer deposited on PET substrate, λ_excitare = 335 nm (a). AZO layer deposited on PET substrate, λ_excitare = 435 nm (b). Single-layer organic on PET/AZO, λ_excitare = 335 nm (c). Single-layer organic on PET/AZO, λ_excitare = 435 nm (d). Bi-layer organic on PET/AZO, λ_excitare = 335 nm (e). Bi-layer organic on PET/AZO, λ_excitare = 435 nm (f). Tauc plot for L13 deposited on PET/AZO (g). L78 film deposited on PET/AZO (h), where A is absorbance and E is the photon energy. The substrates for (c–f) samples are indicated in Table 1.

PL spectra of AZO layer deposited on PET substrate, λ_excitare = 335 nm (a). AZO layer deposited on PET substrate, λ_excitare = 435 nm (b). Single-layer organic on PET/AZO, λ_excitare = 335 nm (c). Single-layer organic on PET/AZO, λ_excitare = 435 nm (d). Bi-layer organic on PET/AZO, λ_excitare = 335 nm (e). Bi-layer organic on PET/AZO, λ_excitare = 435 nm (f). Tauc plot for L13 deposited on PET/AZO (g). L78 film deposited on PET/AZO (h), where A is absorbance and E is the photon energy. The substrates for (c–f) samples are indicated in Table 1.