journal article·2024-08Open access

Cu(II) and Ni(II) Phthalocyanine‐Based Hole‐Transporting Materials for Stable Perovskite Solar Cells with Efficiencies Reaching 20.0%

Jianxing Xia, Jorge Labella, Perihan Kübra Demircioglu, Manuel Pérez‐Escribano, Joaquín Calbo, Abdullah M. Asiri, Enrique Ortí, Mine Ince, Mohammad Khaja Nazeeruddin, Tomás Torres

Solar RRL· Volume 8· Issue 16

Abstract

Herein, Cu(II)Pcs and Ni(II)Pcs peripherally tetra‐functionalized with 5‐hexylthiophene (HT), 5‐hexyl‐2,2′‐bithiophene (HBT), and tertbutyl groups (TB) are readily synthesized and employed as hole‐transporting materials (HTMs) in mixed‐ion perovskite ([FAPbI3]0.85[MAPbBr3]0.15) solar cells, achieving power conversion efficiencies (PCEs) up to 20.0%. Remarkably, both the peripheral functionalization and the central metal are found to play a role in the performance. Through a combination of experimental and theoretical techniques, it is found that the simplest HTM, TB‐CuPc, is the best‐performing HTM primarily due to its higher hole mobility and a more appropriate highest‐occupied molecular orbital, whose enables efficient hole extraction without open‐circuit voltage (Voc)losses. This derivative leads to PCEs of 19.96%, which are among the highest values for Pc‐based HTMs. Importantly, devices incorporating these HTMs present significantly higher stability compared to those based on spiro‐OMeTAD. The results here presented pave the way for more realistic, efficient, and inexpensive photovoltaic devices using phthalocyanine derivatives.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Light-Emitting Diodes Research

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

Affiliations

Institute of Molecular Plus Tianjin University Tianjin 300072 China

Institute of Chemical Sciences and Engineering École Polytechnique Fedérale de Lausanne (EPFL) 1015 Lausanne Switzerland

Department of Organic Chemistry Autónoma University of Madrid Cantoblanco 28049 Madrid Spain

Department of Natural and Mathematical Sciences Faculty of Engineering Tarsus University 33480 Mersin Turkey

Instituto de Ciencia Molecular Universidad de Valencia Catedrático José Beltrán 2 46980 Paterna Spain

Center of Excellence for Advanced Materials Research (CEAMR) King Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia

Advanced Technology Research & Application Center Mersin University Ciftlikkoy Campus TR‐33343 Mersin Turkey

Institute for Advanced Research in Chemical Sciences Autónoma University of Madrid Cantoblanco 28049 Madrid Spain

IMDEA‐Nanociencia 28049 Madrid Spain

Funding

Agencia Estatal de Investigación · Comunidad de Madrid · Generalitat Valenciana · MINECO

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