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High Efficiency Per...
High Efficiency Perovskite Solar Cells Exceeding 22% via a Photo-Assisted Two-Step Sequential Deposition
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- Lee, Dong Geon (author)
- Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
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- Kim, Dong Hoe (author)
- Sejong Univ, Dept Nanotechnol & Adv Mat Engn, 209 Neungdong Ro, Seoul 05006, South Korea.
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- Lee, Jae Myeong (author)
- Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
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- Kim, Byeong Jo (author)
- Uppsala universitet,Fysikalisk kemi
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- Kim, Jun Young (author)
- Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
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- Shin, Seong Sik (author)
- Korea Res Inst Chem Technol, Div Adv Mat, 141 Gajeong Ro, Daejeon 34114, South Korea.
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- Jung, Hyun Suk (author)
- Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 16419, South Korea.
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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. (creator_code:org_t)
- 2020-12-09
- 2021
- English.
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In: Advanced Functional Materials. - : John Wiley & Sons. - 1616-301X .- 1616-3028. ; 31:9
- 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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- 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.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Keyword
- additive
- perovskite
- photoassisted process
- tri‐
- iodide ion
Publication and Content Type
- ref (subject category)
- art (subject category)
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