Improving the Stability and Efficiency of Perovskite Solar Cells by a Bidentate Anilinium Salt

Lucas Scalon; Rodrigo Szostak; Francineide L Araújo; Karla F Adriani; Julian F R V Silveira; Willian X C Oliveira; Juarez L F Da Silva; Caio C Oliveira; Ana Flávia Nogueira

doi:10.1021/jacsau.2c00151

Improving the Stability and Efficiency of Perovskite Solar Cells by a Bidentate Anilinium Salt

JACS Au. 2022 May 4;2(6):1306-1312. doi: 10.1021/jacsau.2c00151. eCollection 2022 Jun 27.

Authors

Lucas Scalon¹, Rodrigo Szostak¹, Francineide L Araújo¹, Karla F Adriani², Julian F R V Silveira², Willian X C Oliveira³, Juarez L F Da Silva², Caio C Oliveira¹, Ana Flávia Nogueira¹

Affiliations

¹ Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970, Brazil.
² São Carlos Institute of Chemistry, University of São Paulo, São Carlos, São Paulo 13560-970, Brazil.
³ Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil.

Abstract

We report improvement in the perovskite solar cell efficiency and stability after passivation with an organic molecule decorated with two anilinium cations. We compare this salt with its neutral analog and found that the change in the electron density distribution upon protonation and the presence of the halide anion are key to explaining the better passivation ability of the salt. In addition, we show that the counteranion has a significant impact on the performance of the device.