Issue 3, 2023

Crystallinity-modulated hollow CeO2−x nanorods as free radical scavengers for long-term photostability in organic photovoltaics

Abstract

Here we investigated the effects of CeO2−x nanostructures as free radical scavengers on the long-term photostability of an organic photovoltaic (OPV) structure. From powder X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and N2 adsorption experiments, it was determined that the single-crystalline hollow CeO2−x nanorods were very effective as hydroxyl radical scavengers. This was attributed to their having more Ce3+ states and a wider surface area than other types of CeO2 nanostructures. Time-dependent UV-visible absorption spectra analyses also revealed that the improved scavenging of hydroxyl radicals in the OPV device was related to the better interfacial compatibility between the organic active and ZnO layers, resulting in improved OPV photostability.

Graphical abstract: Crystallinity-modulated hollow CeO2−x nanorods as free radical scavengers for long-term photostability in organic photovoltaics

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
30 sep 2022
Accepted
18 dec 2022
First published
19 dec 2022

J. Mater. Chem. C, 2023,11, 970-979

Crystallinity-modulated hollow CeO2−x nanorods as free radical scavengers for long-term photostability in organic photovoltaics

S. Yoon, T. Kwon, S. Kim, S. H. Park, Y. Lim, J. Kim, J. Kim, K. An, S. Park, J. Y. Kim and H. J. Son, J. Mater. Chem. C, 2023, 11, 970 DOI: 10.1039/D2TC04152A

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