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Photo-annealed amorphous titanium oxide for perovskite solar cells
Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon, South Korea.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry. Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon, South Korea.ORCID iD: 0000-0003-2134-4702
Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon, South Korea.
Univ Calif San Diego, Dept NanoEngn, 9500 Gilman Dr, La Jolla, CA 92093 USA.
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2019 (English)In: Nanoscale, ISSN 2040-3364, E-ISSN 2040-3372, Vol. 11, no 41, p. 19488-19496Article in journal (Refereed) Published
Abstract [en]

Electron selective layers are important to the efficiency, stability and hysteresis of perovskite solar cells. Photo-annealing is a low-cost, roll-to-roll-compatible process that can be applied to the post-treatment fabrication of sol-gel based metal oxide layers. Here, we fabricate an amorphous titanium oxide electron selective layer at a low temperature in a dry atmosphere using a UV light annealing system and compare it with a thermal annealing process. Active oxygen species are created by using UV light to promote hydrolysis and condense the TiO2 precursor, which removes organic ligands effectively. The photo-annealed TiO2-based perovskite solar cell has a power conversion efficiency of 19.37% without hysteresis.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2019. Vol. 11, no 41, p. 19488-19496
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-400105DOI: 10.1039/c9nr05776eISI: 000498821300046PubMedID: 31552996OAI: oai:DiVA.org:uu-400105DiVA, id: diva2:1380879
Funder
Swedish Energy Agency, 43294-1Available from: 2019-12-19 Created: 2019-12-19 Last updated: 2019-12-19Bibliographically approved

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Kim, Byeong JoBoschloo, Gerrit

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