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Title: Synthesis and characterization of a new perylene bisimide (PBI) derivative and its application as electron acceptor for bulk heterojunction polymer solar cells
Authors: Sharma G.D.
Roy M.S.
Mikroyannidis J.A.
Justin Thomas, K. R.
Published in: Organic Electronics
Abstract: A symmetrical perylene bisimide derivative (PBI) with 2-(4-nitrophenyl) acrylonitrile groups at the 1,7 bay positions of perylene and solubilizing cyclohexyl units was synthesized and characterized. The absorption spectrum of PBI was broad with the most prominent peak at 655 nm and optical band gap of 1.72 eV. The electrochemical investigation indicates that PBI has a LUMO energy level of -3.9 eV which is similar to that of PCBM or PC70BM. Bulk heterojunction solar cell fabricated using a blend of poly(3-hexylthiophene) (P3HT) and PBI (1:1 w/w) as active layer cast from THF exhibited power conversion efficiency (PCE) at 1.56%. However, the device with P3HT:PBI blend deposited from mixed solvent (DIO/THF) improved the PCE to 2.78% which further increased to 3.17% on using the thermal annealed active layer. The improvement in the PCE is attributed to the enhanced crystallinity of the blend (particularly P3HT) and increase in hole mobility leading to balanced charge transport. © 2012 Elsevier B.V. All rights reserved.
Citation: Organic Electronics (2012), 13(12): 3118-3129
Issue Date: 2012
Publisher: Elsevier B.V.
Keywords: Bulk heterojunction
Perylene bisimide derivative
Polymer solar cells
Power conversion efficiency
Solvent additive effect
ISSN: 15661199
Author Scopus IDs: 55549519200
Author Affiliations: Sharma, G.D., RandD Center for Science and Engineering, Jaipur Engineering College, Kukas, Jaipur, Rajasthan 303001, India
Roy, M.S., Defence Laboratory, Jodhpur, Rajasthan 342011, India
Mikroyannidis, J.A., Chemical Technology Laboratory, Department of Chemistry, University of Patras, GR-26500 Patras, Greece
Justin Thomas, K.R., Organic Material Laboratory, Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
Corresponding Author: Sharma, G.D.; RandD Center for Science and Engineering, Jaipur Engineering College, Kukas, Jaipur, Rajasthan 303001, India; email:
Appears in Collections:Journal Publications [CY]

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