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The Effect of Dopant-Free Hole-Transport Polymers on Charge Generation and Recombination in Cesium-Bismuth-Iodide Solar Cells
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.ORCID iD: 0000-0003-2046-1229
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.ORCID iD: 0000-0001-9358-8277
2018 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 11, no 6, p. 1114-1120Article in journal (Refereed) Published
Abstract [en]

The photovoltaic characteristics of CsBi3I10-based solar cells with three dopant-free hole-conducting polymers are investigated. The effect on charge generation and charge recombination in the solar cells using the different polymers is studied and the results indicate that the choice of polymer strongly affects the device properties. Interestingly, for the solar cell with poly[[2,3-bis(3-octyloxyphenyl)-5,8-quinoxalinediyl]-2,5-thiophenediyl] (TQ1), the photon-to-current conversion spectrum is highly improved in the red wavelength region, suggesting that the polymer also contributes to the photocurrent generation in this case. This report provides a new direction for further optimization of Bi-halide solar cells by using dopant-free hole-transporting polymers and shows that the energy levels and the interaction between the Bi-halide and the conducting polymers are very important for solar cell performance.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2018. Vol. 11, no 6, p. 1114-1120
Keywords [en]
bismuth, cesium bismuth iodide, htm, polymer, solar cells
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-354358DOI: 10.1002/cssc.201702169ISI: 000428315300015PubMedID: 29372625OAI: oai:DiVA.org:uu-354358DiVA, id: diva2:1228486
Funder
Swedish Energy AgencySwedish Research CouncilSwedish Research Council FormasAvailable from: 2018-06-28 Created: 2018-06-28 Last updated: 2018-06-28Bibliographically approved

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Zhu, HuiminJohansson, Malin BJohansson, Erik M.J.

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