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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