Hybrid lead halide perovskites have been revolutionary in the photovoltaic research field, reaching efficiencies comparable with the most established photovoltaic technologies, although they have not yet reached their competitors’ stability. The search for a stable configuration requires the engineering of the charge extraction layers; in this work, molecular doping is used as an efficient method for small molecules and polymers employed as hole transport materials in a planar heterojunction configuration on compact-TiO2. We proved the viability of this approach, obtaining significantly increased performances and reduced hysteresis on compact titania-based devices. We investigated the photovoltaic performance correlated to the hole transport material structure. We have demonstrated that the molecular doping mechanism is more reliable than oxidative doping and have verified that molecular doping in polymeric hole transport materials leads to highly efficient perovskite solar cells, with long-term stability.

Trifiletti, V., Degousée, T., Manfredi, N., Fenwick, O., Colella, S., Rizzo, A. (2020). Molecular Doping for Hole Transporting Materials in Hybrid Perovskite Solar Cells. METALS, 10(1) [10.3390/met10010014].

Molecular Doping for Hole Transporting Materials in Hybrid Perovskite Solar Cells

Trifiletti, Vanira
Membro del Collaboration Group
;
Manfredi, Norberto
Membro del Collaboration Group
;
2020

Abstract

Hybrid lead halide perovskites have been revolutionary in the photovoltaic research field, reaching efficiencies comparable with the most established photovoltaic technologies, although they have not yet reached their competitors’ stability. The search for a stable configuration requires the engineering of the charge extraction layers; in this work, molecular doping is used as an efficient method for small molecules and polymers employed as hole transport materials in a planar heterojunction configuration on compact-TiO2. We proved the viability of this approach, obtaining significantly increased performances and reduced hysteresis on compact titania-based devices. We investigated the photovoltaic performance correlated to the hole transport material structure. We have demonstrated that the molecular doping mechanism is more reliable than oxidative doping and have verified that molecular doping in polymeric hole transport materials leads to highly efficient perovskite solar cells, with long-term stability.
Articolo in rivista - Articolo scientifico
molecular doping; perovskite solar cell; stability; hysteresis; F4-TCNQ
English
20-dic-2019
2020
10
1
14
open
Trifiletti, V., Degousée, T., Manfredi, N., Fenwick, O., Colella, S., Rizzo, A. (2020). Molecular Doping for Hole Transporting Materials in Hybrid Perovskite Solar Cells. METALS, 10(1) [10.3390/met10010014].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/258706
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