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https://hdl.handle.net/20.500.14279/18297
Title: | Improving the layer morphology of solution-processed perylene diimide organic solar cells with the use of a polymeric interlayer | Authors: | Singh, Ranbir Mróz, Marta M. Fonzo, Fabio Di Cabanillas-González, Juan R. Marchi, Enrico Bergamini, Giacomo Müllen, Klaus Jacob, Josemon Keivanidis, Panagiotis E. |
Major Field of Science: | Engineering and Technology | Field Category: | Electrical Engineering - Electronic Engineering - Information Engineering | Keywords: | power conversion efficiency (PCE);organic photovoltaic (OPV) | Issue Date: | 7-Oct-2013 | Source: | Organic Photonics and Photovoltaics, 2013, vol. 1, no. 1, pp. 24-38 | Volume: | 1 | Issue: | 1 | Start page: | 24 | End page: | 38 | Journal: | Organic Photonics and Photovoltaics | Abstract: | Herein we demonstrate a method to improve the power conversion efficiency (PCE) parameter of organic photovoltaic (OPV) devices based on the electron acceptor N,N’-bis(1- ethylpropyl)-perylene-3,4,9,10-tetracarboxylic diimide (PDI) blended with the electron donor poly(indenofluorene)-aryloctyl (PIF-Aryl). The device parameters of the short-circuit current, open-circuit voltage and fill factor are found increased after the insertion of a thin poly [9, 9-dioctylfluorene-co-N- [4-(3-methylpropyl)]-diphenylamine] (TFB) photoactive interlayer between the hole-collecting electrode and the photoactive layer of the device. Unlike to most of the cases where interlayers serve as charge extractors, in our system the polymeric interlayer serves as a morphology modifying agent that drives the PDI component to segregate better at the interface with the device cathode; that is at the carrier-collecting electrode interface, which is not in physical contact with the interlayer. The processes of energy/charge transfer of the TFB excitons to/with the PIF-Aryl:PDI top-layer are also addressed. Charge transfer reactions dominate at the TFB/PIF-Aryl:PDI interface but no significant contribution in the photocurrent generation is seen in the photoaction spectra of the bilayer device. | ISSN: | 22993177 | DOI: | 10.2478/oph-2013-0003 | Rights: | © Versita | Type: | Article | Affiliation : | Fondazione Istituto Italiano di Tecnologia Instituto Madrileno de Estudios Avanzados en Nanociencia University of Bologna Max Planck Institute Indian Institute of Technology Delhi |
Appears in Collections: | Άρθρα/Articles |
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Organic Photonics.pdf | Open Access | 3.36 MB | Adobe PDF | View/Open |
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