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Inverted Bulk‐Heterojunction Solar Cells using Polyethylenimine‐Ethoxylated Processed from a Fully Aqueous Dispersion as Electron‐Transport Layer

descriptionPublicationkeyboard_double_arrow_right Article , Journal 28 Oct 2015 Italy Publisher:WileyJournal:Energy Technology, volume 3, pages 1,152-1,158 (issn: 2194-4288, eissn: 2194-4296,

Authors: Polino G.; Casaluci S.; Dianetti M.; Dell'Elce S.; Liscio A.; Mirruzzo V.; Cardone G.; +6 Authors

doi: 10.1002/ente.201500154

handle: 20.500.14243/300611 , 2108/201279 , 11585/627054

Inverted Bulk‐Heterojunction Solar Cells using Polyethylenimine‐Ethoxylated Processed from a Fully Aqueous Dispersion as Electron‐Transport Layer

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Abstract

AbstractIn this work, we present the realization and characterization of bulk‐heterojunction (BHJ) solar cells in which we use a spin‐coated polyethylenimine‐ethoxylated (PEIE) layer as electron‐transporting layer deposited from a fully water‐based solution. We investigated several concentrations of PEIE in aqueous solution and characterized the chemical and electrical behavior of PEIE‐coated fluorinated tin oxide (FTO) substrates. We realized BHJ solar cells using P3HT:PC60BM as active layer achieving a maximum efficiency of 4 % that outperform the device fabricated using a 2‐methoxyethanol‐based PEIE solution considered as reference. Moreover, devices fabricated with the water‐based PEIE solution showed a higher shelf‐life stability compared to those made with the 2‐methoxyethanol‐based PEIE solution. The performances of the devices realized with the water‐based solution were characterized over a period of more than 6 months showing a decrease of 30 % in efficiency.

Country

Italy

Related Organizations

National Research Council
Italy
University of Rome Tor Vergata
Italy
Institute of Organic Synthesis and Photoreactivity
Italy
Alma Mater Studiorum University of Bologna
Italy
University of Rome Tor Vergata
Italy

Keywords

Settore ING-INF/01 - ELETTRONICA, Green solvents; Inverted bulk-heterojunction solar cells; Organic solar cells; Polyethylenimine; Polymer photovoltaics; Energy (all), green solvents · inverted bulk-heterojunction solar cells · organic solar cells · polyethylenimine · polymer photovoltaics

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