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High Efficiency Per...
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Lee, Dong GeonSungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
(author)
High Efficiency Perovskite Solar Cells Exceeding 22% via a Photo-Assisted Two-Step Sequential Deposition
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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2020-12-09
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John Wiley & Sons,2021
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LIBRIS-ID:oai:DiVA.org:uu-450373
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-450373URI
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https://doi.org/10.1002/adfm.202006718DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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One of the most effective methods to achieve high-performance perovskite solar cells (PSCs) is to employ additives as crystallization agents or to passivate defects. Tri-iodide ion has been known as an efficient additive to improve the crystallinity, grain size, and morphology of perovskite films. However, the generation and control of this tri-iodide ion are challenging. Herein, an efficient method to produce tri-iodide ion in a precursor solution using a photoassisted process for application in PSCs is developed. Results suggest that the tri-iodide ion can be synthesized rapidly when formamidinium iodide (FAI) dissolved isopropyl alcohol (IPA) solution is exposed to LED light. Specifically, the photoassisted FAI-IPA solution facilitates the formation of fine perovskite films with high crystallinity, large grain size, and low trap density, thereby improving the device performance up to 22%. This study demonstrates that the photoassisted process in FAI dissolved IPA solution can be an alternative strategy to fabricate highly efficient PSCs with significantly reduced processing times.
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Kim, Dong HoeSejong Univ, Dept Nanotechnol & Adv Mat Engn, 209 Neungdong Ro, Seoul 05006, South Korea.
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Lee, Jae MyeongSungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
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Kim, Byeong JoUppsala universitet,Fysikalisk kemi(Swepub:uu)byeki230
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Kim, Jun YoungSungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
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Shin, Seong SikKorea Res Inst Chem Technol, Div Adv Mat, 141 Gajeong Ro, Daejeon 34114, South Korea.
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Jung, Hyun SukSungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
(author)
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Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.Sejong Univ, Dept Nanotechnol & Adv Mat Engn, 209 Neungdong Ro, Seoul 05006, South Korea.
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In:Advanced Functional Materials: John Wiley & Sons31:91616-301X1616-3028
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