Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/9259
Title: Solution-processed star-shaped oligomers in normal and inverted organic solar cells
Authors: Trukhanov, Vasily A. 
Mannanov, A. L. 
Burgués-Ceballos, Ignasi 
Savva, Achilleas 
Solodukhin, Alexander N. 
Luponosov, Yuriy N. 
Ponomarenko, Sergey 
Paraschuk, Dmitry Yu 
Choulis, Stelios A. 
metadata.dc.contributor.other: Σάββα, Αχιλλέας
Χούλης, Στέλιος Α.
Major Field of Science: Engineering and Technology
Field Category: Electrical Engineering - Electronic Engineering - Information Engineering
Keywords: Normal and inverted architecture;Small-molecule organic solar cells;Star-shaped oligomers
Issue Date: 1-May-2016
Source: Synthetic Metals, 2016, vol. 215, pp. 229-234
Volume: 215
Start page: 229
End page: 234
Journal: Synthetic Metals 
Abstract: The performance of three different star-shaped oligomers (SSOs) as electron donor materials for organic solar cells is investigated. These promising donor components are blended with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) fullerene acceptor and solution-processed normal and inverted organic solar cells are fabricated. These SSOs are based on a triphenylamine core and differ in the solubilizing groups and the oligothiophene arm length. We have found that the power conversion efficiency (PCE) is by 10-60% higher in the normal structure, mainly due to an enhanced open-circuit voltage and fill factor. The observed difference in device performance can be assigned partly to the lower leakage currents. By using contact angle measurements and atomic-force microscopy studies, we estimate the degree of vertical phase separation in bulk heterojunctions. The latter has a good correlation to the corresponding photocurrent differences obtained in the normal and inverted structure devices.
URI: https://hdl.handle.net/20.500.14279/9259
ISSN: 03796779
DOI: 10.1016/j.synthmet.2016.02.022
Rights: © Elsevier
Type: Article
Affiliation : Cyprus University of Technology 
Lomonosov Moscow State University 
Enikolopov Institute of Polymer Synthetic Materials of RAS 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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