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Inganäs, Olle
Alternative names
Publications (10 of 409) Show all publications
Melianas, A., Pranculis, V., Spoltore, D., Benduhn, J., Inganäs, O., Gulbinas, V., . . . Kemerink, M. (2017). Charge Transport in Pure and Mixed Phases in Organic Solar Cells. Advanced Energy Materials, 7(20).
Open this publication in new window or tab >>Charge Transport in Pure and Mixed Phases in Organic Solar Cells
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2017 (English)In: Advanced Energy Materials, ISSN 1614-6840, Vol. 7, no 20Article in journal (Refereed) Published
Abstract [en]

In organic solar cells continuous donor and acceptor networks are considered necessary for charge extraction, whereas discontinuous neat phases and molecularly mixed donor–acceptor phases are generally regarded as detrimental. However, the impact of different levels of domain continuity, purity, and donor–acceptor mixing on charge transport remains only semiquantitatively described. Here, cosublimed donor–acceptor mixtures, where the distance between the donor sites is varied in a controlled manner from homogeneously diluted donor sites to a continuous donor network are studied. Using transient measurements, spanning from sub-picoseconds to microseconds photogenerated charge motion is measured in complete photovoltaic devices, to show that even highly diluted donor sites (5.7%–10% molar) in a buckminsterfullerene matrix enable hole transport. Hopping between isolated donor sites can occur by long-range hole tunneling through several buckminsterfullerene molecules, over distances of up to ≈4 nm. Hence, these results question the relevance of “pristine” phases and whether a continuous interpenetrating donor–acceptor network is the ideal morphology for charge transport.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017
Keyword
charge carrier transport, fullerene domains, low donor concentration, organic photovoltaics, tunneling
National Category
Physical Chemistry Condensed Matter Physics Biophysics Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
urn:nbn:se:liu:diva-139690 (URN)10.1002/aenm.201700888 (DOI)000413695300018 ()
Note

Funding agencies: German Federal Ministry for Education and Research (BMBF) through the InnoProfille project "Organische p-i-n Bauelemente 2.2"; Research Council of Lithuania [MIP-85/2015]; Science Council of Sweden; Knut and Alice Wallenberg foundation; Wallenberg Scholar

Available from: 2017-08-09 Created: 2017-08-09 Last updated: 2017-11-13Bibliographically approved
Wang, C., Zhang, W., Meng, X., Bergqvist, J., Liu, X., Genene, Z., . . . Fahlman, M. (2017). Ternary Organic Solar Cells with Minimum Voltage Losses. Advanced Energy Materials, 7(21), Article ID 1700390.
Open this publication in new window or tab >>Ternary Organic Solar Cells with Minimum Voltage Losses
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2017 (English)In: Advanced Energy Materials, ISSN 1614-6840, Vol. 7, no 21, 1700390Article in journal (Refereed) Published
Abstract [en]

A new strategy for designing ternary solar cells is reported in this paper. A low-bandgap polymer named PTB7-Th and a high-bandgap polymer named PBDTTS-FTAZ sharing the same bulk ionization potential and interface positive integer charge transfer energy while featuring complementary absorption spectra are selected. They are used to fabricate efficient ternary solar cells, where the hole can be transported freely between the two donor polymers and collected by the electrode as in one broadband low bandgap polymer. Furthermore, the fullerene acceptor is chosen so that the energy of the positive integer charge transfer state of the two donor polymers is equal to the energy of negative integer charge transfer state of the fullerene, enabling enhanced dissociation of all polymer donor and fullerene acceptor excitons and suppressed bimolecular and trap assistant recombination. The two donor polymers feature good miscibility and energy transfer from high-bandgap polymer of PBDTTS-FTAZ to low-bandgap polymer of PTB7-Th, which contribute to enhanced performance of the ternary solar cell.

Place, publisher, year, edition, pages
John Wiley & Sons, 2017
Keyword
binary equivalent, minimum voltage losses, same bulk and interface energy, ternary solar cells
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:liu:diva-143026 (URN)10.1002/aenm.201700390 (DOI)000414711100002 ()2-s2.0-85025441174 (Scopus ID)
Note

Funding agencies: Knut and Alice Wallenberg Foundation; Swedish Research Council [2016-05498]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO Mat LiU) [2009 00971]; Goran Gustafsson Foundat

Available from: 2017-11-15 Created: 2017-11-15 Last updated: 2017-12-05Bibliographically approved
Admassie, S., Ajjan, F., Elfwing, A. & Inganäs, O. (2016). Biopolymer hybrid electrodes for scalable electricity storage. Materials Horizons, 3(3), 174-185.
Open this publication in new window or tab >>Biopolymer hybrid electrodes for scalable electricity storage
2016 (English)In: Materials Horizons, ISSN 2051-6347, E-ISSN 2051-6355, Vol. 3, no 3, 174-185 p.Article, review/survey (Refereed) Published
Abstract [en]

Powering the future, while maintaining a cleaner environment and a strong socioeconomic growth, is going to be one of the biggest challenges faced by mankind in the 21st century. The first step in overcoming the challenge for a sustainable future is to use energy more efficiently so that the demand for fossil fuels can be reduced drastically. The second step is a transition from the use of fossil fuels to renewable energy sources. In this sense, organic electrode materials are becoming increasingly attractive compared to inorganic electrode materials which have reached a plateau regarding performance and have severe drawbacks in terms of cost, safety and environmental friendliness. Using organic composites based on conducting polymers, such as polypyrrole, and abundant, cheap and naturally occurring biopolymers rich in quinones, such as lignin, has recently emerged as an interesting alternative. These materials, which exhibit electronic and ionic conductivity, provide challenging opportunities in the development of new charge storage materials. This review presents an overview of recent developments in organic biopolymer composite electrodes as renewable electroactive materials towards sustainable, cheap and scalable energy storage devices.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY, 2016
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:liu:diva-128741 (URN)10.1039/c5mh00261c (DOI)000375296600002 ()
Note

Funding Agencies|Knut and Alice Wallenberg Foundation; Wallenberg Scholar grant

Available from: 2016-05-31 Created: 2016-05-30 Last updated: 2017-11-30
Zhang, F., Inganäs, O., Zhou, Y. & Vandewal, K. (2016). Development of polymer-fullerene solar cells. NATIONAL SCIENCE REVIEW, 3(2), 222-239.
Open this publication in new window or tab >>Development of polymer-fullerene solar cells
2016 (English)In: NATIONAL SCIENCE REVIEW, ISSN 2095-5138, Vol. 3, no 2, 222-239 p.Article, review/survey (Refereed) Published
Abstract [en]

Global efforts and synergetic interdisciplinary collaborations on solution-processed bulk-heterojunction polymer solar cells (PSCs or OPVs) made power conversion efficiencies over 10% possible. The rapid progress of the field is credited to the synthesis of a large number of novel polymers with specially tunable optoelectronic properties, a better control over the nano-morphology of photoactive blend layers, the introduction of various effective interfacial layers, new device architectures and a deeper understanding of device physics. We will review the pioneering materials for polymer-fullerene solar cells and trace the progress of concepts driving their development. We discuss the evolution of morphology control, interfacial layers and device structures fully exploring the potential of photoactive materials. In order to guide a further increase in power conversion efficiency of OPV, the current understanding of the process of free charge carrier generation and the origin of the photovoltage is summarized followed by a perspective on how to overcome the limitations for industrializing PSCs.

Place, publisher, year, edition, pages
OXFORD UNIV PRESS, 2016
Keyword
polymer-fullerene solar cells; electron donors and acceptors; morphology; interfacial layer; device physics
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:liu:diva-130434 (URN)10.1093/nsr/nww020 (DOI)000379759700024 ()
Note

Funding Agencies|Swedish Research Council (VR); Swedish Energy Agency (EM) [VR 621-2013-5561, EM 42033-1]; Knut and Alice Wallenberg Foundation; National Natural Science Foundation of China [21474035]; InnoProfile project organische pin Bauelemente 2.2 [03IPT602X]

Available from: 2016-08-07 Created: 2016-08-05 Last updated: 2016-08-07
Molla, S., Elfwing, A. & Inganäs, O. (2016). Electrochemical Synthesis and Characterization of Interpenetrating Networks of Conducting Polymers for Enhanced Charge Storage. ADVANCED MATERIALS INTERFACES, 3(10), 1500533.
Open this publication in new window or tab >>Electrochemical Synthesis and Characterization of Interpenetrating Networks of Conducting Polymers for Enhanced Charge Storage
2016 (English)In: ADVANCED MATERIALS INTERFACES, ISSN 2196-7350, Vol. 3, no 10, 1500533- p.Article in journal (Refereed) Published
Abstract [en]

A supercapacitor electrode consisting of an interpenetrating network of poly(aminoanthraquinone) (PAAQ) and poly(3,4-ethylenedioxythiophene) (PEDOT) is synthesized by a simple two-step galvanostatic deposition and characterized by electrochemical methods. By electrodepositing PEDOT on top of PAAQ, it is possible to access the quinones in PAAQ and as a result the specific capacitance of PAAQ increases from 90 to 383 F g(-1) and also significantly improves the charge-storage capacity from 25 to 106 mAh g(-1) at a discharge current of 1 A g(-1). These values are also significantly higher than most reported values for PEDOT and hybrids. Moreover, the hybrid material shows excellent stability with 91% of the initial capacitance being retained after 2000 cycles at a discharge rate of 2 A g(-1).

Place, publisher, year, edition, pages
WILEY-BLACKWELL, 2016
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:liu:diva-130669 (URN)10.1002/admi.201500533 (DOI)000380051100001 ()
Note

Funding Agencies|Knut and Alice Wallenberg Foundation

Available from: 2016-08-20 Created: 2016-08-19 Last updated: 2016-08-20
Jager, E. & Inganäs, O. (2016). Electrochemomechanical Devices from Conjugated Polymers. In: Saleem Hashmi (Ed.), Reference Module in Materials Science and Materials Engineering: (pp. 1-5). Oxford: Elsevier.
Open this publication in new window or tab >>Electrochemomechanical Devices from Conjugated Polymers
2016 (English)In: Reference Module in Materials Science and Materials Engineering / [ed] Saleem Hashmi, Oxford: Elsevier, 2016, 1-5 p.Chapter in book (Other academic)
Abstract [en]

Conjugated polymer actuators are devices where the volume of a conjugated (or conducting) polymer material is changed during a change of the state of oxidation or reduction of the polymer. This volume change can be utilized to construct actuators, for instance as a single layer or fiber resulting in a linear actuator or assembled into a multilayer structure where the active material is combined with a passive supporting material forming bending actuator.

Place, publisher, year, edition, pages
Oxford: Elsevier, 2016
Keyword
Actuators, conducting polymers, conjugated polymers, electroactive polymers
National Category
Textile, Rubber and Polymeric Materials
Identifiers
urn:nbn:se:liu:diva-123658 (URN)10.1016/B978-0-12-803581-8.01888-9 (DOI)978-0-12-803581-8 (ISBN)
Note

Update of O. Inganäs, E.W.H. Jager Electrochemomechanical Devices from Polymer Conductors and SemiconductorsEncyclopedia of Materials: Science and Technology (Second Edition), 2001, Pages 2531-2535 DOI: 10.1016/B0-08-043152-6/00458-7

Available from: 2016-01-05 Created: 2016-01-05 Last updated: 2016-01-14Bibliographically approved
Wagner, M., Rebis, T. & Inganäs, O. (2016). Enhancing charge storage of conjugated polymer electrodes with phenolic acids. Journal of Power Sources, 302, 324-330.
Open this publication in new window or tab >>Enhancing charge storage of conjugated polymer electrodes with phenolic acids
2016 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 302, 324-330 p.Article in journal (Refereed) Published
Abstract [en]

We here present studies of electrochemical doping of poly(1-aminoanthraquinone) (PAAQ) films with three structurally different phenolic acids. The examined phenolic acids (sinapic, ferulic and syringic acid) were selected due to their resemblance to redox active groups, which can be found in lignin. The outstanding electrochemical stability of PAAQ films synthesized for this work enabled extensive cycling of phenolic acid-doped PAAQ films. Potentiodynamic and charge discharge studies revealed that phenolic acid-doped PAAQ films exhibited enhanced capacitance in comparison to undoped PAAQ films, together with appearance of redox activity characteristics specific for each dopant. Electrochemical kinetic studies performed on microelectrodes affirmed the fast electron transfer for hydroquinone-to-quinone reactions with these phenolic compounds. These results imply the potential application of phenolic acids in cheap and degradable energy storage devices. (C) 2015 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV, 2016
Keyword
Conjugated polymers; Phenolic acids; Quinones; Redox capacitor
National Category
Biological Sciences
Identifiers
urn:nbn:se:liu:diva-124084 (URN)10.1016/j.jpowsour.2015.10.062 (DOI)000366068800042 ()
Note

Funding Agencies|Knut and Alice Wallenberg foundation through the project Power Papers; Wallenberg Scholar grant

Available from: 2016-01-25 Created: 2016-01-19 Last updated: 2017-11-30
Zhao, W., Qian, D., Zhang, S., Li, S., Inganäs, O., Gao, F. & Hou, J. (2016). Fullerene-Free Polymer Solar Cells with over 11% Efficiency and Excellent Thermal Stability. Advanced Materials, 28(23), 4734-4739.
Open this publication in new window or tab >>Fullerene-Free Polymer Solar Cells with over 11% Efficiency and Excellent Thermal Stability
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2016 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 28, no 23, 4734-4739 p.Article in journal (Refereed) Published
Abstract [en]

A nonfullerene-based polymer solar cell (PSC) that significantly outperforms fullerene-based PSCs with respect to the power-conversion efficiency is demonstrated for the first time. An efficiency of amp;gt;11%, which is among the top values in the PSC field, and excellent thermal stability is obtained using PBDB-T and ITIC as donor and acceptor, respectively.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH, 2016
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:liu:diva-130061 (URN)10.1002/adma.201600281 (DOI)000377531900023 ()27061511 (PubMedID)
Note

Funding Agencies|National Basic Research Program 973 [2014CB643501]; NSFC [91333204, 21325419]; Chinese Academy of Sciences [XDB12030200]; CAS-Croucher Funding Scheme for Joint Labs [CAS14601]; China Scholarship Council (CSC)

Available from: 2016-07-06 Created: 2016-07-06 Last updated: 2017-11-28
Ajjan, F., Casado, N., Rebis, T., Elfwing, A., Solin, N., Mecerreyes, D. & Inganäs, O. (2016). High performance PEDOT/lignin biopolymer composites for electrochemical supercapacitors. Journal of Materials Chemistry A, 4(5), 1838-1847.
Open this publication in new window or tab >>High performance PEDOT/lignin biopolymer composites for electrochemical supercapacitors
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2016 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 4, no 5, 1838-1847 p.Article in journal (Refereed) Published
Abstract [en]

Developing sustainable organic electrode materials for energy storage applications is an urgent task. We present a promising candidate based on the use of lignin, the second most abundant biopolymer in nature. This polymer is combined with a conducting polymer, where lignin as a polyanion can behave both as a dopant and surfactant. The synthesis of PEDOT/Lig biocomposites by both oxidative chemical and electrochemical polymerization of EDOT in the presence of lignin sulfonate is presented. The characterization of PEDOT/Lig was performed by UV-Vis-NIR spectroscopy, FTIR infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, cyclic voltammetry and galvanostatic charge-discharge. PEDOT doped with lignin doubles the specific capacitance (170.4 F g(-1)) compared to reference PEDOT electrodes (80.4 F g(-1)). The enhanced energy storage performance is a consequence of the additional pseudocapacitance generated by the quinone moieties in lignin, which give rise to faradaic reactions. Furthermore PEDOT/Lig is a highly stable biocomposite, retaining about 83% of its electroactivity after 1000 charge/discharge cycles. These results illustrate that the redox doping strategy is a facile and straightforward approach to improve the electroactive performance of PEDOT.

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY, 2016
National Category
Biological Sciences
Identifiers
urn:nbn:se:liu:diva-125323 (URN)10.1039/c5ta10096h (DOI)000368839200035 ()
Note

Funding Agencies|Power Papers project from the Knut and Alice Wallenberg foundation; Wallenberg Scholar grant from the Knut and Alice Wallenberg foundation; Marie Curie network Renaissance (NA); European Research Council by Starting Grant Innovative Polymers for Energy Storage (iPes) [306250]; Basque Government

Available from: 2016-02-23 Created: 2016-02-19 Last updated: 2017-11-30
Rebis, T., Yang Nilsson, T. & Inganäs, O. (2016). Hybrid materials from organic electronic conductors and synthetic-lignin models for charge storage applications. Journal of Materials Chemistry A, 4(5), 1931-1940.
Open this publication in new window or tab >>Hybrid materials from organic electronic conductors and synthetic-lignin models for charge storage applications
2016 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 4, no 5, 1931-1940 p.Article in journal (Refereed) Published
Abstract [en]

Homopolymers and copolymers of the monolignols syringol (S) and guaiacol (G) were prepared as well-defined lignin model compounds. Polymerisation was performed by phenol-formaldehyde condensation, also including the monomer hydroquinone (HQ) to extend the range of redox processes in these synthetic lignins (SLig). The chemical structures of the SLig samples were characterized by C-13 and quantitative P-31 NMR, and the molecular weight was monitored by size exclusion chromatography (SEC). Subsequently, SLig were incorporated into two different electron-conducting matrix - single-wall carbon nanotubes (SWNT) and polypyrrole (PPy), respectively. As a result, the hybrid materials, with a controlled amount of SWNT or with an unknown amount of PPy, were assembled and compared. The charge storage properties in the investigated materials are attributed to contributions from both the double-layer capacitance of the conducting matrix, and the faradaic reactions provided by quinone groups immobilized in the electrodes. The results indicate a considerable improvement of charge capacity, with the synthetic lignins incorporated in the hybrid materials. With a PPy carrying S, G and HQ, better performance is obtained than has previously been obtained with lignin derivatives, showing a maximum capacity of 94 mA h g(-1). Moreover, a low amount of electronic conductor (20% wt of SWNT) is adequate to perform efficient electron communication between redox active quinones and the electrode surface, providing 72 mA h g(-1).

Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY, 2016
National Category
Biological Sciences
Identifiers
urn:nbn:se:liu:diva-125324 (URN)10.1039/c5ta06821e (DOI)000368839200045 ()
Note

Funding Agencies|Knut and Alice Wallenberg Foundation through project Power Papers

Available from: 2016-02-24 Created: 2016-02-19 Last updated: 2017-11-30
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