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. CoutsolelosMaria Vasilopoulou

Research output: Contribution to journalArticlepeer-review

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 (MAPbI 3) 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.

Original languageEnglish
Pages (from-to)2570-2580
Number of pages11
JournalSustainable Energy and Fuels
Issue number10
DOIs
Publication statusPublished - 4 May 2022

Keywords

  • Energy Engineering and Power Technology
  • Fuel Technology
  • Renewable Energy, Sustainability and the Environment

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