WFRF:(El Zohry Ahmed)
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Improved Morphology Control Using a Modified Two-Step Method for Efficient Perovskite Solar Cells
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- Bi, Dongqin (author)
- Uppsala universitet,Institutionen för kemi - Ångström
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- El-Zohry, Ahmed M. (author)
- Uppsala universitet,Fysikalisk kemi
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- Hagfeldt, Anders (author)
- Uppsala universitet,Fysikalisk kemi
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- (creator_code:org_t)
- 2014-10-30
- 2014
- English.
- In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 6:21, s. 18751-18757
- Journal article (peer-reviewed)
Abstract
Subject headings
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- A two-step wet chemical synthesis method for methylammonium lead(II) triiodide (CH3NH3PbI3) perovskite is further developed for the preparation of highly reproducible solar cells, with the following structure: fluorine-doped tin oxide (FTO)/TiO2 (compact)/TiO2 (mesoporous)/CH3NH3PbI3/spiro-OMeTAD/Ag. The morphology of the perovskite layer could be controlled by careful variation of the processing conditions. Specifically, by modifying the drying process and inclusion of a dichloromethane treatment, more uniform films could be prepared, with longer emission lifetime in the perovskite material and longer electron lifetime in solar cell devices, as well as faster electron transport and enhanced charge collection at the selective contacts. Solar cell efficiencies up to 13.5% were obtained.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
Keyword
- photovoltaic
- methylammonium lead(ii) triiodide
- solution-processed semiconductor
- mesoporous TiO2
- dichloromethane
- emission lifetime
Publication and Content Type
- ref (subject category)
- art (subject category)
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