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Granqvist, Claes Göran
Alternative names
Publications (10 of 499) Show all publications
Arvizu, M. A., Qu, H.-Y., Niklasson, G. A. & Granqvist, C. G. (2018). Electrochemical pretreatment of electrochromic WO3 films gives greatly improved cycling durability. Thin Solid Films, 653, 1-3
Open this publication in new window or tab >>Electrochemical pretreatment of electrochromic WO3 films gives greatly improved cycling durability
2018 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 653, p. 1-3Article in journal (Refereed) Published
Abstract [en]

Electrochromic WO3 thin films have important applications in devices such as smart windows for energy-efficient buildings. Long-term electrochemical cycling durability of these films is essential and challenging. Here we investigate reactively sputter-deposited WO3 films, backed by indium-tin oxide layers and immersed in electrolytes of LiClO4 in propylene carbonate, and demonstrate unprecedented electrochemical cycling durability after straight-forward electrochemical pretreatments by the application of a voltage of 6 V vs. Li/Li+ for several hours.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA, 2018
National Category
Materials Chemistry Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-352465 (URN)10.1016/j.tsf.2018.02.032 (DOI)000429409800001 ()
Funder
Swedish Research Council, 821-2012-5144]EU, FP7, Seventh Framework Programme, 267234Swedish Foundation for Strategic Research , RIF14-0053
Available from: 2018-06-07 Created: 2018-06-07 Last updated: 2018-06-14Bibliographically approved
Granqvist, C. G., Arvizu, M. A., Bayrak Pehlivan, I., Qu, H.-Y., Wen, R.-T. & Niklasson, G. A. (2018). Electrochromic materials and devices for energy efficiency and human comfort in buildings: A critical review. Electrochimica Acta, 259, 1170-1182
Open this publication in new window or tab >>Electrochromic materials and devices for energy efficiency and human comfort in buildings: A critical review
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2018 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 259, p. 1170-1182Article, review/survey (Refereed) Published
Abstract [en]

Electrochromic (EC) materials can be integrated in thin-film devices and used for modulating optical transmittance. The technology has recently been implemented in large-area glazing (windows and glass facades) in order to create buildings which combine energy efficiency with good indoor comfort. This critical review describes the basics of EC technology, provides a case study related to EC foils for glass lamination, and discusses a number of future aspects. Ample literature references are given with the object of providing an easy entrance to the burgeoning research field of electrochromics.

National Category
Materials Chemistry Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-350203 (URN)10.1016/j.electacta.2017.11.169 (DOI)000423968600129 ()
Available from: 2018-05-08 Created: 2018-05-08 Last updated: 2018-05-15Bibliographically approved
Granqvist, C. G., Bayrak Pehlivan, I. & Niklasson, G. A. (2018). Electrochromics on a roll: Web-coating and lamination for smart windows. Paper presented at 60th Annual Technical Conference of the Society-of-Vacuum-Coaters (SVC), APR 29-MAY 04, 2017, Providence, RI. Surface & Coatings Technology, 336, 133-138
Open this publication in new window or tab >>Electrochromics on a roll: Web-coating and lamination for smart windows
2018 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 336, p. 133-138Article in journal (Refereed) Published
Abstract [en]

Electrochromic devices can vary the throughput of solar energy and visible light in glazing for buildings, which are then able to combine improved energy efficiency with enhanced indoor comfort and convenience. The technology can be implemented in different ways; here the focus is on web-coated devices which can be delivered, on a roll or in the form of large sheets, as foil for glass lamination. The present paper introduces the technology, discusses web-coating versus in-line glass coating, mentions lamination, and touches on possibilities to combine electrochromism with other functionalities such as thermochromic control of solar energy transmittance. The purpose of the paper is to give a tutorial overview of a technology that is currently introduced in buildings.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA, 2018
Keywords
Web-coated electrochromic device, Electrolyte functionalization, Infrared blocking, Thermochromism
National Category
Materials Chemistry Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-348848 (URN)10.1016/j.surfcoat.2017.08.006 (DOI)000425478000021 ()
Conference
60th Annual Technical Conference of the Society-of-Vacuum-Coaters (SVC), APR 29-MAY 04, 2017, Providence, RI
Available from: 2018-04-20 Created: 2018-04-20 Last updated: 2018-05-02Bibliographically approved
Montero, J., Guillén, C., Granqvist, C. G., Herrero, J. & Niklasson, G. A. (2017). Beyond transparency and low resistivity in Antimony-doped tin oxide thin films. In: Abstracts: . Paper presented at Norwegian Solar Cell Conference (NSCC) 2017, Son, Norge, 5-10 maj..
Open this publication in new window or tab >>Beyond transparency and low resistivity in Antimony-doped tin oxide thin films
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2017 (English)In: Abstracts, 2017Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-336927 (URN)
Conference
Norwegian Solar Cell Conference (NSCC) 2017, Son, Norge, 5-10 maj.
Available from: 2017-12-19 Created: 2017-12-19 Last updated: 2017-12-19
Montero, J. A., Guillén, C., Granqvist, C. G., Herrero, J. & Niklasson, G. A. (2017). Beyond transparency and low resistivity in Antimony-doped tin oxide thin films. In: : . Paper presented at Norwegian Solar Cell Conference 2017, Son, Norway, May 9-10, 2017.
Open this publication in new window or tab >>Beyond transparency and low resistivity in Antimony-doped tin oxide thin films
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2017 (English)Conference paper, Poster (with or without abstract) (Refereed)
National Category
Materials Engineering
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
urn:nbn:se:uu:diva-332973 (URN)
Conference
Norwegian Solar Cell Conference 2017, Son, Norway, May 9-10, 2017
Available from: 2017-11-03 Created: 2017-11-03 Last updated: 2017-12-29Bibliographically approved
Granqvist, C. G. (2017). Chromogenic coatings for glazing: Toward a new paradigm for buildings. In: : . Paper presented at Soc Vacuum Coaters' SVC Bull, Spring 2017 (pp. 44-49).
Open this publication in new window or tab >>Chromogenic coatings for glazing: Toward a new paradigm for buildings
2017 (English)Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-336870 (URN)
Conference
Soc Vacuum Coaters' SVC Bull, Spring 2017
Available from: 2017-12-18 Created: 2017-12-18 Last updated: 2017-12-18
Pacheco-Torgal, F., Granqvist, C. G., Jelle, B., Vanoli, G., Bianco, N. & Kurnitski, J. (Eds.). (2017). Cost-Effective Energy Efficient Building Retrofitting: Materials, Technologies, Optimization, and Case Studies. Cambridge, UK: Woodhead Publishing Limited
Open this publication in new window or tab >>Cost-Effective Energy Efficient Building Retrofitting: Materials, Technologies, Optimization, and Case Studies
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2017 (English)Collection (editor) (Refereed)
Place, publisher, year, edition, pages
Cambridge, UK: Woodhead Publishing Limited, 2017. p. 616
Series
Woodhead Publishing Series in Civil and Structural Engineering ; 77
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-336100 (URN)978-0-08-101128-7 (ISBN)
Available from: 2017-12-12 Created: 2017-12-12 Last updated: 2017-12-12
Qu, H.-Y., Arvizu, M., Granqvist, C. G. & Niklasson, G. A. (2017). Degradation and rejuvenation in electrochromic nickel oxide films. In: Abstracts: . Paper presented at Hybrid & Organic Photovoltaics (HOPV 17), Lausanne, Schweiz, 21-24 maj.
Open this publication in new window or tab >>Degradation and rejuvenation in electrochromic nickel oxide films
2017 (English)In: Abstracts, 2017Conference paper, Published paper (Refereed)
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-336932 (URN)
Conference
Hybrid & Organic Photovoltaics (HOPV 17), Lausanne, Schweiz, 21-24 maj
Available from: 2017-12-19 Created: 2017-12-19 Last updated: 2017-12-19
Wen, R.-T., Malmgren, S., Granqvist, C. G. & Niklasson, G. A. (2017). Degradation Dynamics for Electrochromic WO3 Films under Extended Charge Insertion and Extraction: Unveiling Physicochemical Mechanisms. ACS Applied Materials and Interfaces, 9(14), 12872-12877
Open this publication in new window or tab >>Degradation Dynamics for Electrochromic WO3 Films under Extended Charge Insertion and Extraction: Unveiling Physicochemical Mechanisms
2017 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 9, no 14, p. 12872-12877Article in journal (Refereed) Published
Abstract [en]

Degradation of electrochromic thin films under extended charge insertion and extraction is a technically important phenomenon for which no in-depth understanding is currently on hand. Here, we report on an explorative study of sputter-deposited WO3 films in a Li-ion-conducting electrolyte by use of cyclic voltammetry, in situ optical transmittance, and impedance spectroscopy. A cycling-dependent decrease of the charge capacity could be accurately modeled by a power-law function, and impedance spectroscopy gave evidence for anomalous diffusion as well as a higher charge transfer resistance during deintercalation than during intercalation. Thus, a consistent conceptual picture emerged for the degradation dynamics; it includes the growth of an interfacial barrier layer and also embraces anomalous diffusion coupled with dispersive power-law chemical kinetics.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2017
Keywords
WO3, thin films, electrochromism, detrapping physicochemical mechanisms
National Category
Materials Engineering Engineering and Technology
Research subject
Engineering Science with specialization in Solid State Physics
Identifiers
urn:nbn:se:uu:diva-322183 (URN)10.1021/acsami.7b01324 (DOI)000399354100082 ()28328195 (PubMedID)
Funder
EU, FP7, Seventh Framework Programme, 267234Swedish Research Council
Available from: 2017-05-17 Created: 2017-05-17 Last updated: 2017-11-02
Zhang, B., Kish, L. & Granqvist, C. G. (2017). Drawing from hats by noise-based logic. International Journal of Parallell Emergent Distributed Systems (32), 244-251
Open this publication in new window or tab >>Drawing from hats by noise-based logic
2017 (English)In: International Journal of Parallell Emergent Distributed Systems, no 32, p. 244-251Article in journal (Refereed) Published
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-336869 (URN)
Available from: 2017-12-18 Created: 2017-12-18 Last updated: 2017-12-18
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