Development of Charge-Transporting Materials for Efficient Tin-Based Perovskite Solar Cells
Project/Area Number |
20K22531
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Multi-year Fund |
Review Section |
0501:Physical chemistry, functional solid state chemistry, organic chemistry, polymers, organic materials, biomolecular chemistry, and related fields
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Research Institution | Kyoto University |
Principal Investigator |
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Project Period (FY) |
2020-09-11 – 2023-03-31
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Project Status |
Completed (Fiscal Year 2022)
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Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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Keywords | ペロブスカイト太陽電池 / マルチポッド型 / 電荷回収層 / 変換効率 / 単分子膜 / 電荷回収 / マルチポッド / スズ / ペロブスカイト / 太陽電池 / 自己組織 / 液晶 / 自己組織化性単分子膜 / 電荷回収材料 |
Outline of Research at the Start |
スズ系ペロブスカイト太陽電池の低い光電変換特性の要因として,適した電荷回収層材料が限られていることと,分子レベルでのペロブスカイト層との界面構造制御法が無いことに着目し,1)ペロブスカイト層に対して face-on の分子配向を示す円盤状の液晶性 p 型有機半導体材料の開発,及び2)4 方向にイオン性置換基をもつテトラポッド型分子を用いた単分子パッシベーション膜の開発に取り組む.これらにより,スズ系ペロブスカイト太陽電池の光電変換効率の飛躍的向上(>20%)の実現を目指す.
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Outline of Final Research Achievements |
Hole-collecting monolayers have drawn attention in perovskite solar cell research due to their ease of processing, high performance, and good durability. Since molecules in the hole-collecting monolayer are typically composed of functionalized π-conjugated structures, hole extraction is expected to be more efficient when the π-cores are oriented face-on with respect to the adjacent surfaces. However, strategies for reliably controlling the molecular orientation in monolayers remain elusive. In this work, multiple anchoring groups were used to control the face-on orientation of a monolayer chemisorbed on a transparent conducting oxide electrode surface. The face-on orientation was found to facilitate hole extraction, leading to perovskite solar cells with enhanced stability and high power conversion efficiencies up to 23.0%.
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Academic Significance and Societal Importance of the Research Achievements |
ペロブスカイト太陽電池の分野において,これまでにほとんどの正孔回収材料がバルクの厚膜層として用いられてきた。しかし、電荷回収材料自体の厚膜による光吸収が取り出せる電流密度を低下させてしまい,また,この厚膜のモルフォルジーの安定性がデバイス自体の低い熱安定性の原因となっている.これに対して,本研究ではマルチポッド型構造をもつ単分子膜材料の配向配列の制御による各層の界面の精密制御を実証し,太陽電池の高効率化・高耐久性化を達成した.マルチポッド型の有用性を実証することにより,本太陽電池の開発分野に多大なインパクトをもたらすとともに,その実用化を大きく加速できるものと期待できる.
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Report
(4 results)
Research Products
(69 results)
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[Journal Article] Synergistic Surface Modification of Tin?Lead Perovskite Solar Cells2023
Author(s)
Hu Shuaifeng、Zhao Pei、Nakano Kyohei、Oliver Robert D. J.、Pascual Jorge、Smith Joel A.、Yamada Takumi、Truong Minh Anh、Murdey Richard、Shioya Nobutaka、Hasegawa Takeshi、Ehara Masahiro、Johnston Michael B.、Tajima Keisuke、Kanemitsu Yoshihiko、Snaith Henry J.、Wakamiya Atsushi
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Journal Title
Advanced Materials
Volume: 35
Issue: 9
Pages: 2208320-2208320
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] A Universal Surface Treatment for p-i-n Perovskite Solar Cells2022
Author(s)
Hu Shuaifeng、Pascual Jorge、Liu Wentao、Funasaki Tsukasa、Truong Minh Anh、Hira Shota、Hashimoto Ruito、Morishita Taro、Nakano Kyohei、Tajima Keisuke、Murdey Richard、Nakamura Tomoya、Wakamiya Atsushi
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Journal Title
ACS Applied Materials & Interfaces
Volume: 14
Issue: 50
Pages: 56290-56297
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Systematic investigations on properties of bromide containing tin perovskites2022
Author(s)
Tomoya Nakamura, Kento Otsuka, Shuaifeng Hu, Tarou Morishita, Ruito Hashimoto, Taketo Handa, Yoshihiko Kanemitsu, Richard Murdey, Minh Anh Truong, Atsushi Wakamiya
Organizer
Global Photovoltaic Conference (GPVC 2022), Gwangju, Korea
Related Report
Int'l Joint Research
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[Presentation] Efficient Inverted Perovskite Solar Cells Enabled by Multipodal Hole-Collecting Monolayers Based on Triazatruxene Skeleton2022
Author(s)
Minh Anh Truong, Tsukasa Funasaki, Lucas Ueberricke, Wataru Nojo, Richard Murdey, Takumi Yamada, Shuaifeng Hu, Tomoya Nakamura, Nobutaka Shioya, Takeshi Hasegawa, Yoshihiko Kanemitsu, Takanori Suzuki, Atsushi Wakamiya
Organizer
International Photovoltaic Science and Engineering Conference (PVSEC-33), Nagoya, Japan
Related Report
Int'l Joint Research
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[Presentation] Interfacial Modifications for Efficient Tin-lead Perovskite Solar Cells2022
Author(s)
Shuaifeng Hu, Pei Zhao, Kyohei Nakano, Jorge Pascual, Minh Anh Truong, Richard Murdey, Nobutaka Shioya, Takeshi Hasegawa, Masahiro Ehara, Keisuke Tajima, Yoshihiko Kanemitsu, Atsushi Wakamiya
Organizer
International Photovoltaic Science and Engineering Conference (PVSEC-33), Nagoya, Japan
Related Report
Int'l Joint Research
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[Presentation] Halide segregation and the operational stability of monbolayer-based p-i-n perovskite solar cell2022
Author(s)
Richard Murdey, Yasuhisa Ishikura, Yuko Matsushige, Shuaifeng Hu, Jorge Pascual, Minh Anh Truong, Tomoya Nakamura, Atsushi Wakamiya
Organizer
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP23), Kobe, Japan
Related Report
Int'l Joint Research
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[Presentation] Composition-Property Mapping in Bromide-Containing Tin Perovskite Prepared with High Purity Starting Materials2022
Author(s)
Tomoya Nakamura, Kento Otsuka, Shuaifeng Hu, Ruito Hashimoto, Taro Morishita, Taketo Handa, Takumi Yamada, Minh Anh Truong, Richard Murdey, Yoshihiko Kanemitsu, Atsushi Wakamiya
Organizer
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP23), Kobe, Japan
Related Report
Int'l Joint Research
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