| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Koster, Lja
University of Groningen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2023The Role of Thermalization in the Cooling Dynamics of Hot Carrier Solar Cellscitations
- 2022A method for identifying the cause of inefficient salt-doping in organic semiconductorscitations
- 2022Vacuum-Deposited Cesium Tin Iodide Thin Films with Tunable Thermoelectric Propertiescitations
- 2022Backbone-driven host-dopant miscibility modulates molecular doping in NDI conjugated polymerscitations
- 2021Amphipathic Side Chain of a Conjugated Polymer Optimizes Dopant Location toward Efficient N-Type Organic Thermoelectricscitations
- 2021Revealing Charge Carrier Mobility and Defect Densities in Metal Halide Perovskites via Space-Charge-Limited Current Measurementscitations
- 2021Understanding Dark Current-Voltage Characteristics in Metal-Halide Perovskite Single Crystalscitations
- 2021Carrier-carrier Coulomb interactions reduce power factor in organic thermoelectricscitations
- 2021Molecular Doping Directed by a Neutral Radicalcitations
- 2020Reaching a Double-Digit Dielectric Constant with Fullerene Derivativescitations
- 2020Electrical Conductivity of Doped Organic Semiconductors Limited by Carrier-Carrier Interactionscitations
- 2020N-type organic thermoelectricscitations
- 2020Toward Understanding Space-Charge Limited Current Measurements on Metal Halide Perovskitescitations
- 20191,8-diiodooctane acts as a photo-acid in organic solar cellscitations
- 2018Enhanced n-Doping Efficiency of a Naphthalenediimide-Based Copolymer through Polar Side Chains for Organic Thermoelectricscitations
- 2017N-Type Organic Thermoelectricscitations
- 2017Relating polymer chemical structure to the stability of polymer:citations
- 2016Deposition of LiF onto Films of Fullerene Derivatives Leads to Bulk Dopingcitations
- 2016N-type polymers as electron extraction layers in hybrid perovskite solar cells with improved ambient stabilitycitations
- 2016A New Figure of Merit for Organic Solar Cells with Transport-limited Photocurrentscitations
- 2016Compatibility of PTB7 and [70]PCBM as a Key Factor for the Stability of PTB7citations
- 2015The Effect of Large Compositional Inhomogeneities on the Performance of Organic Solar Cellscitations
- 2015Strategy for Enhancing the Dielectric Constant of Organic Semiconductors Without Sacrificing Charge Carrier Mobility and Solubilitycitations
- 2014Strategy for Enhancing the Electric Permittivity of Organic Semiconductors
- 2014Charge transport and recombination in PDPP5Tcitations
- 2011Validity of the Einstein Relation in Disordered Organic Semiconductorscitations
- 2007Device physics of polymercitations
- 2007Device physics of donor/acceptor-blend solar cells
- 2007Hybrid polymer solar cells from highly reactive diethylzinccitations
- 2006Light intensity dependence of open-circuit voltage and short-circuit current of polymer/fullerene solar cellscitations
- 2005Origin of the light intensity dependence of the short-circuit current of polymer/fullerene solar cellscitations
- 2004Effect of metal electrodes on the performance of polymercitations
Places of action
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article
Compatibility of PTB7 and [70]PCBM as a Key Factor for the Stability of PTB7
Abstract
<p>The rapid degradation of organic photovoltaic (OPV) devices compared to conventional inorganic solar cells is one of the critical issues that have to be solved in order to make OPV a competitive commercial technology. The understanding of the fundamental mechanisms that reduce the power conversion efficiency (PCE) over time is beneficial for the design of new materials with enhanced stability. This paper focuses on bulk heterojunction organic solar cells based on thieno [3,4-b] thiophene-alt-benzodithiophene (PTB7) mixed with [6,6]-phenyl-C71-butyric acid methyl esther ([70]PCBM). In spite of being promising in terms of PCE, devices based on this blend are unstable and have a short lifetime. When exposed to light in inert atmosphere, the PCE drops by 15% in less than 1 h and by 35% in 8 h; this degradation is induced by the ultraviolet (UV) part of the spectrum. This paper analyzes the effect induced by UV light on the transport of charges in PTB7:[70] PCBM. Contrary to expectations, the electron transport shows evidence of trapping, while the transport of holes appears unaffected. Furthermore, it is proven that the loss of PCE is due to a reaction between PTB7 and [70] PCBM, while the intrinsic instability of the polymer plays a marginal role.</p>