journal article·2022-07Open access

Functionalized BODIPYs as Tailor‐Made and Universal Interlayers for Efficient and Stable Organic and Perovskite Solar Cells

Anastasia Soultati, Francesca Nunzi, Azhar Fakharuddin, Apostolis Verykios, Konstantina K. Armadorou, Marinos Tountas, Stylianos Panagiotakis, Ermioni Polydorou, Asterios Charisiadis, Vasilis Nikolaou, Michael Papadakis, Georgios Charalambidis, Emmanouil Nikoloudakis, Konstantina Yannakopoulou, Xichang Bao, Chunming Yang, Alan D. F. Dunbar, Emmanuel Kymakis, Leonidas C. Palilis, Abd Rashid Bin Mohd Yusoff, Panagiotis Argitis, Athanassios G. Coutsolelos, Filippo De Angelis, Mohammad Khaja Nazeeruddin, Maria Vasilopoulou

Advanced Materials Interfaces· Volume 9· Issue 21

Abstract

Abstract Solar cells based on metal halide perovskite and polymer donor:nonfullerene acceptor blend absorbers have recently witnessed a significant rise in their photovoltaic performance. However, they still suffer from some instability issues originating from the inferior interface quality and poor nanomorphology of the absorber layer. In this work, a series of functionalized boron‐dipyrromethene, BODIPY, molecules are introduced as ultrathin interlayers at the absorber/electron transport layer interface. This study indicates that BODIPY compounds with a high molecular dipole moment can enhance the device performance mainly due to better interface energy level alignment. They also induce passivation of defect traps and improvement in the charge transport properties of the absorber layer coated on top of them. Among the various compounds used, amino‐functionalized BODIPY, owing to the synergetic effect of the abovementioned factors, enables the highest power conversion efficiency in organic (15.69%) as well as in perovskite solar cells (20.12%). Amino‐functionalized BODIPY also demonstrates an enhanced stability under continuous illumination (in nitrogen) without and with heating (at 65 °C) for 1000 h. These results pave the way for the implementation of molecules with tailor‐made functionalities in high efficiency and stable solution‐based photovoltaic devices of the future.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Organic Electronics and Photovoltaics · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Nanoscience and Nanotechnology National Center for Scientific Research Demokritos Agia Paraskevi Athens 15341 Greece

Department of Chemistry Biology and Biotechnology University of Perugia Via Elce di Sotto 8 Perugia 06123 Italy

Department of Physics University of Konstanz 78457 Konstanz Germany

Department of Chemistry National and Kapodestrian University of Athens Zografos 15771 Greece

Department of Electrical & Computer Engineering Hellenic Mediterranean University Estavromenos Heraklion Crete GR‐71410 Greece

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

Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China

Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 China

Department of Chemical and Biological Engineering University of Sheffield Mappin Street Sheffield S1 3JD UK

Department of Physics University of Patras Rio 26504 Greece

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

Department of Natural Sciences & Mathematics College of Sciences & Human Studies Prince Mohammad Bin Fahd University P.O. Box 1664 Al Khobar 31952 Kingdom of Saudi Arabia

Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne (EPFL) Rue de l'Industrie 17 Sion CH‐1951 Switzerland

Funding

European Commission · State Scholarships Foundation

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