Issue 5, 2023

What is special about Y6; the working mechanism of neat Y6 organic solar cells

Abstract

Non-fullerene acceptors (NFAs) have delivered advancement in bulk heterojunction organic solar cell efficiencies, with a significant milestone of 20% now in sight. However, these materials challenge the accepted wisdom of how organic solar cells work. In this work we present a neat Y6 device with an efficiency above 4.5%. We thoroughly investigate mechanisms of charge generation and recombination as well as transport in order to understand what is special about Y6. Our data suggest that Y6 generates bulk free charges, with ambipolar mobility, which can be extracted in the presence of transport layers.

Graphical abstract: What is special about Y6; the working mechanism of neat Y6 organic solar cells

Supplementary files

Article information

Article type
Communication
Submitted
15 Nov. 2022
Accepted
03 Febr. 2023
First published
01 Marts 2023

Mater. Horiz., 2023,10, 1825-1834

What is special about Y6; the working mechanism of neat Y6 organic solar cells

E. Sağlamkaya, A. Musiienko, M. S. Shadabroo, B. Sun, S. Chandrabose, O. Shargaieva, G. Lo Gerfo M., N. F. van Hulst and S. Shoaee, Mater. Horiz., 2023, 10, 1825 DOI: 10.1039/D2MH01411D

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