Next Article in Journal
Real-Time Minimization Power Losses by Driven Primary Regulation in Islanded Microgrids
Previous Article in Journal
Micro-Grooved Pipe Design of Parabolic Trough by Metaheuristic Optimization: An Empirical Comparison
Previous Article in Special Issue
Determining the Effect of Different Heat Treatments on the Electrical and Morphological Characteristics of Polymer Solar Cells
Open AccessLetter

Benzothiadiazole Based Cascade Material to Boost the Performance of Inverted Ternary Organic Solar Cells

1
Department of Electrical & Computer Engineering, Hellenic Mediterranean University, 71410 Heraklion, Crete, Greece
2
Department of Materials Science and Technology, University of Crete, 71003 Heraklion, Crete, Greece
3
Department of Mineral Resources Engineering, Technical University of Crete, 73100 Chania, Crete, Greece
4
Laboratory of Bioinorganic Chemistry, Chemistry Department, University of Crete, Voutes Campus, 71003 Heraklion, Crete, Greece
5
Department of Electronic Engineering, Hellenic Mediterranean University, 73132 Chania, Crete, Greece
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Energies 2020, 13(2), 450; https://doi.org/10.3390/en13020450
Received: 10 November 2019 / Revised: 12 January 2020 / Accepted: 15 January 2020 / Published: 17 January 2020
(This article belongs to the Special Issue Organic Solar Cells)
A conjugated, ladder-type multi-fused ring 4,7-dithienbenzothiadiazole:thiophene derivative, named as compound ‘T’, was for the first time incorporated, within the PTB7:PC71BM photoactive layer for inverted ternary organic solar cells (TOSCs) realization. The effective energy level offset caused by compound T between the polymeric donor and fullerene acceptor materials, as well as its resulting potential as electron cascade material contribute to an enhanced exciton dissociation, electron transfer facilitator and thus improved overall photovoltaic performance. The engineering optimization of the inverted TOSC, ITO/PFN/PTB7:Compound T(5% v/v):PC71BM/MoO3/Al, resulted in an overall power conversion efficiency (PCE) of 8.34%, with a short-circuit current density (Jsc) of 16.75 mA cm−2, open-circuit voltage (Voc) of 0.74 V and a fill factor (FF) of 68.1%, under AM1.5G illumination. This photovoltaic performance was improved by approximately 12% with respect to the control binary device. View Full-Text
Keywords: organic solar cells; ternary blend; bulk heterojunction; cascade effect; charge transfer; additive; benzothiadiazole; small molecule organic solar cells; ternary blend; bulk heterojunction; cascade effect; charge transfer; additive; benzothiadiazole; small molecule
Show Figures

Graphical abstract

MDPI and ACS Style

Krassas, M.; Polyzoidis, C.; Tzourmpakis, P.; Kosmidis, D.M.; Viskadouros, G.; Kornilios, N.; Charalambidis, G.; Nikolaou, V.; Coutsolelos, A.G.; Petridis, K.; Stylianakis, M.M.; Kymakis, E. Benzothiadiazole Based Cascade Material to Boost the Performance of Inverted Ternary Organic Solar Cells. Energies 2020, 13, 450.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop