journal article·2021-07Open access

Stable Perovskite Solar Cells Using Molecularly Engineered Functionalized Oligothiophenes as Low‐Cost Hole‐Transporting Materials

Vellaichamy Joseph, Albertus Adrian Sutanto, Cansu Igci, Olga A. Syzgantseva, Vygintas Jankauskas, Kasparas Rakstys, Valentin I. E. Queloz, Hiroyuki Kanda, Ping‐Yu Huang, Jen‐Shyang Ni, Sachin Kinge, Ming‐Chou Chen, Mohammad Khaja Nazeeruddin

Small· Volume 17· Issue 26

Abstract

Abstract Triarylamine‐substituted bithiophene (BT‐4D), terthiophene (TT‐4D), and quarterthiophene (QT‐4D) small molecules are synthesized and used as low‐cost hole‐transporting materials (HTMs) for perovskite solar cells (PSCs). The optoelectronic, electrochemical, and thermal properties of the compounds are investigated systematically. The BT‐4D, TT‐4D, and QT‐4D compounds exhibit thermal decomposition temperature over 400 °C. The n‐i‐p configured perovskite solar cells (PSCs) fabricated with BT‐4D as HTM show the maximum power conversion efficiency (PCE) of 19.34% owing to its better hole‐extracting properties and film formation compared to TT‐4D and QT‐4D, which exhibit PCE of 17% and 16%, respectively. Importantly, PSCs using BT‐4D demonstrate exceptional stability by retaining 98% of its initial PCE after 1186 h of continuous 1 sun illumination. The remarkable long‐term stability and facile synthetic procedure of BT‐4D show a great promise for efficient, stable, and low‐cost HTMs for PSCs for commercial applications.
Source: crossref · Quality: baseline

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

Department of Chemistry and Research Center of New Generation Light Driven Photovoltaic Module National Central University Taoyuan 32001 Taiwan

Group for Molecular Engineering of Functional Materials Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne (EPFL) Sion CH‐1951 Switzerland

Laboratory of Quantum Photodynamics Department of Chemistry Lomonosov Moscow State University Moscow 119991 Russia

Institute of Chemical Physics Vilnius University Sauletekio al. 3 Vilnius 10257 Lithuania

Department of Organic Chemistry Kaunas University of Technology Radvilenu pl. 19 Kaunas 50254 Lithuania

Department of Chemical and Materials Engineering Photo‐Sensitive Material Advanced Research and Technology Center (Photo‐SMART) National Kaohsiung University of Science and Technology Kaohsiung 80778 Taiwan

Toyota Motor Corporation Toyota Motor Technical Centre Advanced Technology Division Hoge Wei 33 Zaventem B‐1930 Belgium

Funding

Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung · Ministry of Science and Technology, Taiwan

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