Enhanced efficiency in organic solar cells by incorporation of small molecule based on tosylate anion

A small molecule electrolyte (SME) based on tosylate anion (FN-NDI-OTs) was synthesized and applied as the cathode interlayer in organic solar cells (OSCs). This material generates a beneficial interface dipole at the cathode interface by the tosylate anion functionality, leading to the improvement...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2023-07, Vol.760 (1), p.16-26
Main Authors: Nasrun, Rahmatia Fitri Binti, Son, Dong Hwan, Park, Sung Heum, Ko, Minseong, Kim, Joo Hyun
Format: Article
Language:English
Subjects:
Anions
Cathodes
Dipoles
Electrolytic cells
Energy conversion efficiency
Interlayer
Interlayers
inverted organic solar cells
Photovoltaic cells
small molecule electrolyte
Solar cells
tosylate anion
Zinc oxide
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Summary:A small molecule electrolyte (SME) based on tosylate anion (FN-NDI-OTs) was synthesized and applied as the cathode interlayer in organic solar cells (OSCs). This material generates a beneficial interface dipole at the cathode interface by the tosylate anion functionality, leading to the improvement of power conversion efficiency (PCE). The device based on the blend of PTB7-Th:PC 71 BM as the active layer exhibits improved PCE, increasing from 8.79% based on pristine ZnO to 9.53% using the ZnO/SME as the interlayer, which mainly resulted from the enhancement. These results indicate the potential of SME with tosylate anion as an interlayer in OSCs.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2022.2164654