A new hole-transport material (HTM) based on the 1,3,4-oxadiazole moiety (H1) was prepared through a single-step synthetic pathway starting from commercially available products. Thanks to a deep HOMO level, H1 was used as HTM in CH3NH3PbBr3 perovskite solar cells yielding an efficiency of 5.8 %. The reference HTM (Spiro-OMeTAD), under the same testing conditions, furnished a lower efficiency of 5.1 %. Steady-state and time-resolved photoluminescence of the thin films showed good charge-extraction dynamics for H1 devices. In addition, H1 shows a large thermal stability and completely amorphous behavior (as evaluated by thermal gravimetric analysis and differential scanning calorimetry).

A New 1,3,4-Oxadiazole-Based Hole-Transport Material for Efficient CH3NH3PbBr3 Perovskite Solar Cells

CARLI, Stefano
Primo
;
MARCHETTI, Nicola;CARAMORI, Stefano;BIGNOZZI, Carlo Alberto
Penultimo
;
2016

Abstract

A new hole-transport material (HTM) based on the 1,3,4-oxadiazole moiety (H1) was prepared through a single-step synthetic pathway starting from commercially available products. Thanks to a deep HOMO level, H1 was used as HTM in CH3NH3PbBr3 perovskite solar cells yielding an efficiency of 5.8 %. The reference HTM (Spiro-OMeTAD), under the same testing conditions, furnished a lower efficiency of 5.1 %. Steady-state and time-resolved photoluminescence of the thin films showed good charge-extraction dynamics for H1 devices. In addition, H1 shows a large thermal stability and completely amorphous behavior (as evaluated by thermal gravimetric analysis and differential scanning calorimetry).
2016
Carli, Stefano; Baena, Juan Pablo Correa; Marianetti, Giulia; Marchetti, Nicola; Lessi, Marco; Abate, Antonio; Caramori, Stefano; Grätzel, Michael; Be...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2339905
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