Two Diketopyrrolopyrrole based latent pigmentdonor materials were fabricated into thin film bilayer pho-tovoltaic devices featuring PCBM as the acceptor. Ther-mal deprotection of the thin film, carried out at 200∘C,returns the dye-like small molecule to the correspondingpristine pigment quantitatively. The connected evolutionof electrical and morphological features of pure thin filmsand blends are examined. A significant decrease in extinc-tion coefficient was noted and correlated both to intrinsicchanges of the electronic structure upon cleavage and toan increase in internal scattering due to extensive crys-tallization. Power conversion efficiencies of 0.33% wereachieved for bilayer devices, nearly doubling previous re-sults with latent pigment DPP devices, under comparableexperimental conditions.

Beverina, L., Rooney, M., Ruffo, R., Sassi, M., Carulli, F., Luzzati, S., et al. (2018). Diketopyrrolopyrrole latent pigment-based bilayer solar cells. ORGANIC PHOTONICS AND PHOTOVOLTAICS, 6(1), 8-16 [10.1515/oph-2018-0002].

Diketopyrrolopyrrole latent pigment-based bilayer solar cells

Beverina, Luca
;
Rooney, Myles;Ruffo, Riccardo;Sassi, Mauro;Carulli, Francesco;
2018

Abstract

Two Diketopyrrolopyrrole based latent pigmentdonor materials were fabricated into thin film bilayer pho-tovoltaic devices featuring PCBM as the acceptor. Ther-mal deprotection of the thin film, carried out at 200∘C,returns the dye-like small molecule to the correspondingpristine pigment quantitatively. The connected evolutionof electrical and morphological features of pure thin filmsand blends are examined. A significant decrease in extinc-tion coefficient was noted and correlated both to intrinsicchanges of the electronic structure upon cleavage and toan increase in internal scattering due to extensive crys-tallization. Power conversion efficiencies of 0.33% wereachieved for bilayer devices, nearly doubling previous re-sults with latent pigment DPP devices, under comparableexperimental conditions.
Si
Articolo in rivista - Articolo scientifico
Scientifica
Organic Solar Cells; Small molecules; Renewable devices; Latent pigment
English
8
16
9
Beverina, L., Rooney, M., Ruffo, R., Sassi, M., Carulli, F., Luzzati, S., et al. (2018). Diketopyrrolopyrrole latent pigment-based bilayer solar cells. ORGANIC PHOTONICS AND PHOTOVOLTAICS, 6(1), 8-16 [10.1515/oph-2018-0002].
Beverina, L; Rooney, M; Ruffo, R; Sassi, M; Carulli, F; Luzzati, S; Resel, R; Schrode, B
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/328850
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