Defect passivation in perovskite solar cells using an amino-functionalized BODIPY fluorophore

Anastasia Soultati; Marinos Tountas; Azhar Fakharuddin; Maria-Christina Skoulikidou; Apostolis Verykios; Konstantina-Kalliopi Armadorou; Nikolaos Tzoganakis; Veroniki P. Vidali; Ilias Sakellis; Panagiota Koralli; Christos L. Chochos; Ioannis Petsalakis; Emmanouil Nikoloudakis; Leonidas C. Palilis; Petros-Panagis Filippatos; Panagiotis Argitis; Dimitris Davazoglou; Abd. Rashid bin Mohd Yusoff; Emmanuel Kymakis; Athanassios G. Coutsolelos; Maria Vasilopoulou

doi:10.1039/D2SE00384H

Defect passivation in perovskite solar cells using an amino-functionalized BODIPY fluorophore†

Anastasia Soultati,

*^a Marinos Tountas,^b Azhar Fakharuddin,

*^c Maria-Christina Skoulikidou,^a Apostolis Verykios,^a Konstantina-Kalliopi Armadorou,^a Nikolaos Tzoganakis,^b Veroniki P. Vidali,^a Ilias Sakellis,^a Panagiota Koralli,^d Christos L. Chochos,^d Ioannis Petsalakis,^e Emmanouil Nikoloudakis,^f Leonidas C. Palilis,

^g Petros-Panagis Filippatos,

^ah Panagiotis Argitis,

^a Dimitris Davazoglou,

^a Abd. Rashid bin Mohd Yusoff,

ⁱ Emmanuel Kymakis,

^b Athanassios G. Coutsolelos

*^f and Maria Vasilopoulou

*^a

Author affiliations

* Corresponding authors

^a Institute of Nanoscience and Nanotechnology, National Center for Scientific Research Demokritos, Agia Paraskevi, 15341 Athens, Greece
E-mail: m.vasilopoulou@inn.demokritos.gr

^b Department of Electrical & Computer Engineering, Hellenic Mediterranean University, Estavromenos, Heraklion, Crete, Greece

^c Department of Physics, University of Konstanz, 78457 Konstanz, Germany
E-mail: azhar-fakhar.uddin@uni-konstanz.de

^d Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens 11635, Greece

^e Institute of Theoretical and Physical Chemistry, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, Athens 11635, Greece

^f Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, Heraklion 70013, Crete, Greece

^g Department of Physics, University of Patras, Patras, Greece

^h Faculty of Engineering, Environment and Computing, Coventry University, Priory Street, Coventry CV1 5FB, UK

ⁱ Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea

Abstract

The presence of defects formed during the growth and crystallization of perovskite films is a limiting factor to achieve high efficiency and stability in perovskite solar cells. Here, we present a robust route to passivate bulk and surface defects in perovskite films by using an amino-functionalized BODIPY fluorophore. The addition of amino-BODIPY into the prototype methyl ammonium lead iodide (MAPbI₃) perovskite solution significantly altered the nanomorphology of the perovskite film and alleviated the defect formation leading to efficiency enhancement and prolonged stability of perovskite solar cells with a regular structure. Similar results were obtained when using the BODIPY fluorophore in chlorobenzene (CB)-based antisolvent treatment of spin-coated perovskite films in inverted perovskite solar cells. In addition, reduction in the electron extraction barrier was evidenced. Our approach represents a universal passivation methodology for boosting the efficiency and stability in both regular and inverted perovskite solar cells.

Sustainable Energy & Fuels

Defect passivation in perovskite solar cells using an amino-functionalized BODIPY fluorophore†

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Defect passivation in perovskite solar cells using an amino-functionalized BODIPY fluorophore

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