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Tetrahydroxy‐Perylene Bisimide Embedded in a Zinc Oxide Thin Film as an Electron‐Transporting Layer for High‐Performance Non‐Fullerene Organic Solar Cells
Author(s) -
Wen Xinbo,
NowakKról Agnieszka,
Nagler Oliver,
Kraus Felix,
Zhu Na,
Zheng Nan,
Müller Matthias,
Schmidt David,
Xie Zengqi,
Würthner Frank
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201907467
Subject(s) - perylene , fullerene , organic solar cell , materials science , thin film , solar cell , zinc , hybrid solar cell , photochemistry , oxide , photocurrent , inorganic chemistry , chemical engineering , nanotechnology , molecule , chemistry , polymer , organic chemistry , optoelectronics , engineering , metallurgy , composite material
Abstract By introduction of four hydroxy (HO) groups into the two perylene bisimide (PBI) bay areas, new HO‐PBI ligands were obtained which upon deprotonation can complex Zn II ions and photosensitize semiconductive zinc oxide thin films. Such coordination is beneficial for dispersing PBI photosensitizer molecules evenly into metal oxide films to fabricate organic–inorganic hybrid interlayers for organic solar cells. Supported by the photoconductive effect of the ZnO: HO‐PBI hybrid interlayers, improved electron collection and transportation is achieved in fullerene and non‐fullerene polymer solar cell devices, leading to remarkable power conversion efficiencies of up to 15.95 % for a non‐fullerene based organic solar cell.