title: Analysis of the Hysteresis Behavior of Perovskite Solar Cells with Interfacial Fullerene Self-Assembled Monolayers.
abstract: The use of self-assembled monolayers (SAMs) of fullerene derivatives reduces the hysteresis of perovskite solar cells (PSCs). We have investigated three different fullerene derivatives observing a decrease on hysteresis for all the cases. Several processes can contribute to the hysteresis behavior on PSCs. We have determined that the reduced hysteresis observed for devices with SAMs is produced by a decrease of the capacitive hysteresis. In addition, with an appropriated functionalization, SAMs can increase photocurrent even when no electron selective contact (ESC) is present and a SAM is deposited just on top of the transparent conductive oxide. Appropriated functionalization of the fullerene derivative, as introducing -CN groups, can enhance cell performance and reduce hysteresis. This work paves the way for a future enhancement of PSCs by a tailored design of the fullerene molecules that could actuate as an ESC by themselves.
authors: Institute of Advanced Materials (INAM), Universitat Jaume I , Avenida Sos Baynat, s/n, 12006 Castelló, Spain.
authors: Marta
authors: M
authors: Valles-Pelarda
authors: Institute of Advanced Materials (INAM), Universitat Jaume I , Avenida Sos Baynat, s/n, 12006 Castelló, Spain.
authors: Bruno Clasen
authors: BC
authors: Hames
authors: IMDEA-Nanociencia, C/Faraday 9, Campus de la Universidad Autónoma de Madrid , E-28049 Madrid, Spain.
authors: Inés
authors: I
authors: García-Benito
authors: Institute of Advanced Materials (INAM), Universitat Jaume I , Avenida Sos Baynat, s/n, 12006 Castelló, Spain.
authors: Osbel
authors: O
authors: Almora
authors: IMDEA-Nanociencia, C/Faraday 9, Campus de la Universidad Autónoma de Madrid , E-28049 Madrid, Spain.
authors: Agustin
authors: A
authors: Molina-Ontoria
authors: Institute of Advanced Materials (INAM), Universitat Jaume I , Avenida Sos Baynat, s/n, 12006 Castelló, Spain.
authors: Rafael S
authors: RS
authors: Sánchez
authors: Institute of Advanced Materials (INAM), Universitat Jaume I , Avenida Sos Baynat, s/n, 12006 Castelló, Spain.
authors: Germà
authors: G
authors: Garcia-Belmonte
authors: IMDEA-Nanociencia, C/Faraday 9, Campus de la Universidad Autónoma de Madrid , E-28049 Madrid, Spain.|Departamento de Química Orgánica. Facultad de Ciencias Químicas, Universidad Complutense de Madrid , E-28040 Madrid, Spain.
authors: Nazario
authors: N
authors: Martín
authors: Institute of Advanced Materials (INAM), Universitat Jaume I , Avenida Sos Baynat, s/n, 12006 Castelló, Spain.
authors: Ivan
authors: I
authors: Mora-Sero