Enhanced performance of planar perovskite solar cells by doping the SnO2 electron transport layer with guanidinium chloride - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Frontiers in Materials Année : 2023

Enhanced performance of planar perovskite solar cells by doping the SnO2 electron transport layer with guanidinium chloride

Résumé

Tin (IV) oxide is a highly promising electron transport layer (ETL) for lead halide perovskite solar cells due to its high conductivity, transparency, wide band gap, and the possibility of low-temperature processing. Nonetheless, charge carrier recombination processes at the SnO 2 /perovskite interface diminish the device performance. Here, we demonstrate that SnO 2 doping with guanidine hydrochloride (G-SnO 2 ) leads to efficient surface passivation and a larger band offset between the ETL and the perovskite layer, resulting in reduced voltage losses and faster electron transfer. Moreover, G-SnO 2 facilitates the growth of highly crystalline perovskite layers. Consequently, a power conversion efficiency of up to 23.48% and a high open-circuit voltage of 1.18 V are obtained in solar cells incorporating the G-SnO 2 ETL. These devices also exhibited negligible hysteresis and maintained more than 96% of their initial power conversion efficiency after 1250 h exposure to the air without encapsulation.
Fichier principal
Vignette du fichier
fmats-10-1118641-2.pdf (1.88 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04171523 , version 1 (26-07-2023)

Identifiants

Citer

Jiajiu Ye, Yuze Li, Asma Aicha Medjahed, Stéphanie Pouget, Dmitry Aldakov, et al.. Enhanced performance of planar perovskite solar cells by doping the SnO2 electron transport layer with guanidinium chloride. Frontiers in Materials, 2023, 1118641, ⟨10.3389/fmats.2023.1118641⟩. ⟨hal-04171523⟩
21 Consultations
65 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More