The Experts below are selected from a list of 966 Experts worldwide ranked by ideXlab platform

Zheng Tang - One of the best experts on this subject based on the ideXlab platform.

  • hot hydrocarbon solvent slot die coating enables high efficiency organic solar cells with temperature dependent aggregation behavior
    Advanced Materials, 2020
    Co-Authors: Heng Zhao, Hafiz Bilal Naveed, Xiaobo Zhou, Jian Yuan, Ke Zhou, Hongbo Wu, Manuel A Scheel, Andrei Chumakov, Stephan V Roth, Zheng Tang
    Abstract:

    Organic solar cells (OSCs) have made rapid progress in terms of their development as a sustainable energy source. However, record-breaking devices have not shown compatibility with large-scale production via solution processing in particular due to the use of halogenated environment-threatening solvents. Here, slot-die fabrication with processing involving hydrocarbon-based solvents is used to realize highly efficient and environmentally friendly OSCs. Highly compatible slot-die coating with roll-to-roll processing using halogenated (chlorobenzene (CB)) and hydrocarbon solvents (1,2,4-trimethylbenzene (TMB) and Ortho-Xylene (o-XY)) is used to fabricate photoactive films. Controlled solution and substrate temperatures enable similar aggregation states in the solution and similar kinetics processes during film formation. The optimized blend film nanostructures for different solvents in the highly efficient PM6:Y6 blend is adopted to show a similar morphology, which results in device efficiencies of 15.2%, 15.4%, and 15.6% for CB, TMB, and o-XY solvents. This approach is successfully extended to other donor-acceptor combinations to demonstrate the excellent universality of this method. The results combine a method to optimize the aggregation state and film formation kinetics with the fabrication of OSCs with environmentally friendly solvents by slot-die coating, which is a critical finding for the future development of OSCs in terms of their scalable production and high-performance.

Heng Zhao - One of the best experts on this subject based on the ideXlab platform.

  • hot hydrocarbon solvent slot die coating enables high efficiency organic solar cells with temperature dependent aggregation behavior
    Advanced Materials, 2020
    Co-Authors: Heng Zhao, Hafiz Bilal Naveed, Xiaobo Zhou, Jian Yuan, Ke Zhou, Hongbo Wu, Manuel A Scheel, Andrei Chumakov, Stephan V Roth, Zheng Tang
    Abstract:

    Organic solar cells (OSCs) have made rapid progress in terms of their development as a sustainable energy source. However, record-breaking devices have not shown compatibility with large-scale production via solution processing in particular due to the use of halogenated environment-threatening solvents. Here, slot-die fabrication with processing involving hydrocarbon-based solvents is used to realize highly efficient and environmentally friendly OSCs. Highly compatible slot-die coating with roll-to-roll processing using halogenated (chlorobenzene (CB)) and hydrocarbon solvents (1,2,4-trimethylbenzene (TMB) and Ortho-Xylene (o-XY)) is used to fabricate photoactive films. Controlled solution and substrate temperatures enable similar aggregation states in the solution and similar kinetics processes during film formation. The optimized blend film nanostructures for different solvents in the highly efficient PM6:Y6 blend is adopted to show a similar morphology, which results in device efficiencies of 15.2%, 15.4%, and 15.6% for CB, TMB, and o-XY solvents. This approach is successfully extended to other donor-acceptor combinations to demonstrate the excellent universality of this method. The results combine a method to optimize the aggregation state and film formation kinetics with the fabrication of OSCs with environmentally friendly solvents by slot-die coating, which is a critical finding for the future development of OSCs in terms of their scalable production and high-performance.

Ke Zhou - One of the best experts on this subject based on the ideXlab platform.

  • hot hydrocarbon solvent slot die coating enables high efficiency organic solar cells with temperature dependent aggregation behavior
    Advanced Materials, 2020
    Co-Authors: Heng Zhao, Hafiz Bilal Naveed, Xiaobo Zhou, Jian Yuan, Ke Zhou, Hongbo Wu, Manuel A Scheel, Andrei Chumakov, Stephan V Roth, Zheng Tang
    Abstract:

    Organic solar cells (OSCs) have made rapid progress in terms of their development as a sustainable energy source. However, record-breaking devices have not shown compatibility with large-scale production via solution processing in particular due to the use of halogenated environment-threatening solvents. Here, slot-die fabrication with processing involving hydrocarbon-based solvents is used to realize highly efficient and environmentally friendly OSCs. Highly compatible slot-die coating with roll-to-roll processing using halogenated (chlorobenzene (CB)) and hydrocarbon solvents (1,2,4-trimethylbenzene (TMB) and Ortho-Xylene (o-XY)) is used to fabricate photoactive films. Controlled solution and substrate temperatures enable similar aggregation states in the solution and similar kinetics processes during film formation. The optimized blend film nanostructures for different solvents in the highly efficient PM6:Y6 blend is adopted to show a similar morphology, which results in device efficiencies of 15.2%, 15.4%, and 15.6% for CB, TMB, and o-XY solvents. This approach is successfully extended to other donor-acceptor combinations to demonstrate the excellent universality of this method. The results combine a method to optimize the aggregation state and film formation kinetics with the fabrication of OSCs with environmentally friendly solvents by slot-die coating, which is a critical finding for the future development of OSCs in terms of their scalable production and high-performance.

  • Hot Hydrocarbon‐Solvent Slot‐Die Coating Enables High‐Efficiency Organic Solar Cells with Temperature‐Dependent Aggregation Behavior
    'Wiley', 2020
    Co-Authors: Zhao Heng, Naveed, Hafiz Bilal, Roth Stephan, Tang Zheng, Müller‐buschbaum Peter, Ma Wei, Lin Baojun, Zhou Xiaobo, Yuan Jian, Ke Zhou
    Abstract:

    Organic solar cells (OSCs) have made rapid progress in terms of their development as a sustainable energy source. However, record‐breaking devices have not shown compatibility with large‐scale production via solution processing in particular due to the use of halogenated environment‐threatening solvents. Here, slot‐die fabrication with processing involving hydrocarbon‐based solvents is used to realize highly efficient and environmentally friendly OSCs. Highly compatible slot‐die coating with roll‐to‐roll processing using halogenated (chlorobenzene (CB)) and hydrocarbon solvents (1,2,4‐trimethylbenzene (TMB) and Ortho‐Xylene (o‐XY)) is used to fabricate photoactive films. Controlled solution and substrate temperatures enable similar aggregation states in the solution and similar kinetics processes during film formation. The optimized blend film nanostructures for different solvents in the highly efficient PM6:Y6 blend is adopted to show a similar morphology, which results in device efficiencies of 15.2%, 15.4%, and 15.6% for CB, TMB, and o‐XY solvents. This approach is successfully extended to other donor–acceptor combinations to demonstrate the excellent universality of this method. The results combine a method to optimize the aggregation state and film formation kinetics with the fabrication of OSCs with environmentally friendly solvents by slot‐die coating, which is a critical finding for the future development of OSCs in terms of their scalable production and high‐performance

Joeri F M Denayer - One of the best experts on this subject based on the ideXlab platform.

  • molecular separations with breathing metal organic frameworks modelling packed bed adsorbers
    Dalton Transactions, 2016
    Co-Authors: Tom Van Assche, Gino V Baron, Joeri F M Denayer
    Abstract:

    Various metal-organic framework (MOFs) adsorbents show peculiar adsorption behaviour as they can adopt different crystal phases, each phase with its own adsorption characteristics. Besides external stimuli such as temperature or light, different species of guest adsorbate can trigger a transition (breathing) of the host structure at a different pressure. Such phase transitions also occur during dynamic separations on a packed bed of adsorbent, where the concentrations of the adsorbates vary throughout axial column distance and time. This work presents a general strategy to model the adsorption behavior of such phase changing adsorbents during column separations and focuses on remarkable model predictions for pure components and binary mixtures in diluted and non-diluted conditions. During binary breakthrough experiments, the behaviour of flexible adsorbents is quite complex. A succession of complete or even partial phase transformations (resulting in phase coexistence) can occur during the adsorption process. A variety of unusual breakthrough profiles is observed for diluted binary mixtures. Simulations reveal at least five types of breakthrough profiles to emerge. The occurrence of these cases can be rationalized by the hodograph technique, combined with the phase diagram of the adsorbent. The remarkable experimental breakthrough profiles observed for Ortho-Xylene/ethylbenzene (diluted) and CO2/CH4 (non-diluted) separation on the flexible MIL-53 framework can be rationalized by application of the proposed model strategy.

  • Shape selective properties of the Al-fumarate metal-organic framework in the adsorption and separation of n-alkanes, iso-alkanes, cyclo-alkanes and aromatic hydrocarbons
    'Royal Society of Chemistry (RSC)', 2016
    Co-Authors: Bozbiyik Belgin, Lannoeye Jeroen, De Vos Dirk, Baron Gino, Joeri F M Denayer
    Abstract:

    The primary goal of this work is to study the adsorption of a wide range of hydrocarbon adsorbates in the Al-fumarate metal-organic framework in order to identify and explore trends in adsorption behaviour that can be related to the sorbate's molecular properties and as well as the properties of this MOF. The pulse chromatographic technique was used to study the adsorption properties of C5-C8 linear, branched, cyclic and aromatic hydrocarbons in vapour phase at low coverage and at high temperatures (150-250 °C). Chromatograms of alkanes having the same number of carbon atoms (C5-C8) clearly show that the linear alkane is retained the longest over its branched and cyclic isomers. Moreover, Xylene isomers are also clearly separated by Al-fumarate, with retention times increasing in the order: Ortho-Xylene < meta-Xylene < para-Xylene. Differences in adsorption enthalpy of more than 10 kJ mol(-1) between linear alkanes and their di/tri-branched or cyclo-alkane isomers were observed, clearly showing that steric effects imposed by the pore structure of the adsorbent cause the difference in adsorption between linear alkanes and their isomers. In conclusion, Al-fumarate behaves as a shape selective material with respect to structural isomers of linear alkanes, with properties resembling those of medium pore size zeolites.crosscheck: This document is CrossCheck deposited related_data: Supplementary Information copyright_licence: The PCCP Owner Societies have an exclusive publication licence for this journal copyright_licence: The accepted version of this article will be made freely available in the Chemical Sciences Article Repository after a 12 month embargo period history: Received 19 October 2015; Accepted 31 December 2015; Advance Article published 11 January 2016; Version of Record published 20 January 2016status: publishe

Jian Yuan - One of the best experts on this subject based on the ideXlab platform.

  • hot hydrocarbon solvent slot die coating enables high efficiency organic solar cells with temperature dependent aggregation behavior
    Advanced Materials, 2020
    Co-Authors: Heng Zhao, Hafiz Bilal Naveed, Xiaobo Zhou, Jian Yuan, Ke Zhou, Hongbo Wu, Manuel A Scheel, Andrei Chumakov, Stephan V Roth, Zheng Tang
    Abstract:

    Organic solar cells (OSCs) have made rapid progress in terms of their development as a sustainable energy source. However, record-breaking devices have not shown compatibility with large-scale production via solution processing in particular due to the use of halogenated environment-threatening solvents. Here, slot-die fabrication with processing involving hydrocarbon-based solvents is used to realize highly efficient and environmentally friendly OSCs. Highly compatible slot-die coating with roll-to-roll processing using halogenated (chlorobenzene (CB)) and hydrocarbon solvents (1,2,4-trimethylbenzene (TMB) and Ortho-Xylene (o-XY)) is used to fabricate photoactive films. Controlled solution and substrate temperatures enable similar aggregation states in the solution and similar kinetics processes during film formation. The optimized blend film nanostructures for different solvents in the highly efficient PM6:Y6 blend is adopted to show a similar morphology, which results in device efficiencies of 15.2%, 15.4%, and 15.6% for CB, TMB, and o-XY solvents. This approach is successfully extended to other donor-acceptor combinations to demonstrate the excellent universality of this method. The results combine a method to optimize the aggregation state and film formation kinetics with the fabrication of OSCs with environmentally friendly solvents by slot-die coating, which is a critical finding for the future development of OSCs in terms of their scalable production and high-performance.