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Toward an alternati...
Toward an alternative approach for the preparation of low-temperature titanium dioxide blocking underlayers for perovskite solar cells
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- Svanström, Sebastian (author)
- Uppsala universitet,Molekyl- och kondenserade materiens fysik
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- Zhao, L. (author)
- Swiss Fed Inst Technol Lausanne EPFL, EPFL SB ISIC LPI, Lab Photon & Interfaces, Inst Chem Sci & Engn, Chemin Alambics,Stn 6, CH-1015 Lausanne, Switzerland;Peking Univ, Dept Phys, State Key Lab Artificial Microstruct & Mesoscop P, Beijing 100871, Peoples R China
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- Nonomura, K. (author)
- Swiss Fed Inst Technol Lausanne EPFL, EPFL SB ISIC LSPM, Inst Chem Sci & Engn, Lab Photomol Sci, Chemin Alambics,Stn 6, CH-1015 Lausanne, Switzerland
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- Oo, T. Z. (author)
- Univ Mandalay, Dept Phys, Mat Res Lab, Mandalay 05032, Myanmar
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- Zakeeruddin, S. M. (author)
- Swiss Fed Inst Technol Lausanne EPFL, EPFL SB ISIC LPI, Lab Photon & Interfaces, Inst Chem Sci & Engn, Chemin Alambics,Stn 6, CH-1015 Lausanne, Switzerland
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- Vlachopoulos, N. (author)
- Swiss Fed Inst Technol Lausanne EPFL, EPFL SB ISIC LSPM, Inst Chem Sci & Engn, Lab Photomol Sci, Chemin Alambics,Stn 6, CH-1015 Lausanne, Switzerland
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- Sloboda, Tamara (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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Svanström, S. (author)
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- Cappel, Ute B. (author)
- KTH,Tillämpad fysikalisk kemi,KTH Royal Inst Technol, Dept Chem, Div Appl Phys Chem, SE-10044 Stockholm, Sweden
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- Hagfeldt, A. (author)
- Swiss Fed Inst Technol Lausanne EPFL, EPFL SB ISIC LSPM, Inst Chem Sci & Engn, Lab Photomol Sci, Chemin Alambics,Stn 6, CH-1015 Lausanne, Switzerland
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- Grätzel, M. (author)
- Swiss Fed Inst Technol Lausanne EPFL, EPFL SB ISIC LPI, Lab Photon & Interfaces, Inst Chem Sci & Engn, Chemin Alambics,Stn 6, CH-1015 Lausanne, Switzerland
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(creator_code:org_t)
- 2019
- 2019
- English.
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In: Journal of Materials Chemistry A. - : Royal Society of Chemistry. - 2050-7488 .- 2050-7496. ; 7:17, s. 10729-10738
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The anodic electrodeposition method is investigated as an alternative technique for the preparation of a titanium oxide (TiO 2 ) blocking underlayer (UL) for perovskite solar cells (PSCs). Extremely thin Ti IV -based films are grown from aqueous acidic titanium(iii) chloride in an electrochemical cell at room temperature. This precursor layer is converted to the UL (ED-UL), in a suitable state for PSC applications, by undertaking a sintering step at 450 °C for half an hour. PSCs with the composition of the light-absorbing material FA 0.85 MA 0.10 Cs 0.05 Pb(I 0.87 Br 0.13 ) 3 (FA and MA denote the formamidinium and methylammonium cations, respectively) based on the ED-UL are compared with PSCs with the UL of a standard type prepared by the spray-pyrolysis method at 450 °C from titanium diisopropoxide bis(acetylacetonate) (SP-UL). We obtain power conversion efficiencies (PCEs) of over 20% for mesoscopic perovskite devices employing both ED-ULs and SP-ULs. Slightly higher fill factor values are observed for ED-UL-based devices. In addition, ED-ULs prepared by the same method have also been applied in planar PSCs, resulting in a PCE exceeding 17%, which is comparable to that for similar PSCs with an SP-UL. The preparation of ED-ULs with a lower sintering temperature, 150 °C, has also been examined. The efficiency of a planar PSC incorporating this underlayer was 14%. These results point out to the possibility of applying ED-ULs in flexible planar PSCs in the future.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- Anodic oxidation
- Chlorine compounds
- Efficiency
- Lead compounds
- Perovskite
- Sintering
- Solar cells
- Spray pyrolysis
- Temperature
- Titanium dioxide
- Titanium oxides
- Absorbing materials
- Acetylacetonates
- Anodic electrodeposition
- Low temperatures
- Lower sintering temperatures
- Methylammonium cations
- Power conversion efficiencies
- Spray pyrolysis method
- Perovskite solar cells
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Svanström, Sebas ...
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Zhao, L.
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Nonomura, K.
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Oo, T. Z.
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Zakeeruddin, S. ...
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Vlachopoulos, N.
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show more...
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Sloboda, Tamara
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Svanström, S.
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Cappel, Ute B.
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Hagfeldt, A.
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Grätzel, M.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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Journal of Mater ...
- By the university
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Royal Institute of Technology
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Uppsala University