DataVXACS Energy LettersPaper
journal article·2023-09-08

Enhancing Intermolecular Interaction of Spiro-OMeTAD for Stable Perovskite Solar Cells with Efficiencies over 24%

Jung Hwan Lee, Tatiana Ghanem, Darío Javier Puchán Sánchez, Pierre Josse, Philippe Blanchard, Hyungju Ahn, Dominik Lungerich, Nam-Gyu Park, Clément Cabanetos, Jong Hyeok Park

ACS Energy Letters· Volume 8· Issue 9
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Source abstract

Abstract

The organic nature of 2,2′,7,7′-tetrakis(N,N-di- p -methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD) has been noted as a stability-limiting factor in perovskite solar cells (PSCs). The requirement for a hygroscopic dopant (lithium bis(trifluoromethanesulfonyl)imide) and low doping efficiency further contribute to the role of spiro-OMeTAD in the easy degradation of PSCs. To resolve this issue, we report a simple strategy enabling the efficiency of spiro-OMeTAD-based PSCs to reach over 24% while greatly enhancing their operational stability. Three different tris(4-methoxyphenyl)amine coupled materials (TCMs) with different core units were synthesized and added in the spiro-OMeTAD hole-transporting layers (HTLs) resulting in enhanced intermolecular interactions. When each TCM was added to spiro-OMeTAD (5 mol % to spiro-OMeTAD), the highest PCE of over 24% was maintained over 90% during 1200 h of operation without encapsulation. This strategy enabled an intermolecular interaction route within the HTL that facilitates efficient hole transport and decreases the amount of dopant needed, which are key parameters for operational stability enhancement.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

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 Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea

University of Angers, CNRS, MOLTECH-ANJOU, SFR-MATRIX, F-49000 Angers, France

Building Blocks for Future Electronics Laboratory (2BFUEL), IRL 2002, CNRS-Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea

Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Republic of Korea

Center for NanoMedicine, Institute for Basic Science (IBS), Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea

Department of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, South Korea

School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea

Funding

Agence Nationale de la Recherche · National Research Foundation of Korea · Centre National de la Recherche Scientifique · Institute for Basic Science · Yonsei-KIST Convergence Research Program · Yonsei Signature Research Cluster Program

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