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Carbon Nano‐Onion and Zinc Oxide Composites as an Electron Transport Layer in Inverted Organic Solar Cells
Author(s) -
Bobrowska Diana M.,
Castro Edison,
Echegoyen Luis,
PlonskaBrzezinska Marta E.
Publication year - 2020
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201900561
Subject(s) - materials science , nanocomposite , raman spectroscopy , scanning electron microscope , thermogravimetric analysis , chemical engineering , zinc , organic solar cell , zinc hydroxide , transmission electron microscopy , carbon nanotube , nanotechnology , composite material , optics , polymer , metallurgy , physics , engineering
We report a facile chemical method to synthesize hybrid nanocomposites containing carbon nano‐onions (CNOs) and zinc oxide or hydroxide. The structure, surface morphology, optical properties and surface area of the CNOs were characterized by X‐ray diffraction, scanning electron microscopy with energy dispersive spectroscopy, transmission electron microscopy, thermogravimetric analysis, infrared and Raman spectroscopies, and adsorption/desorption N 2 techniques. For the first time, we demonstrate the fabrication of bulk heterojunction organic solar cell devices utilizing hybrid nanocomposites containing CNOs and ZnO as the electron transport layer. This configuration showed good photovoltaic performance with maximum external quantum efficiencies of 16.5 and 48.9% and power conversion efficiencies of 0.42 and 1.49% for the pristine ZnO and CNO/ZnO (m CNO : m ZnO =1 : 4) layers, respectively.