Colloidal synthesis of all-inorganic tin-based perovskite quantum dots and their application for solar cells
| Project/Area Number |
21H01743
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 28010:Nanometer-scale chemistry-related
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
孫 洪涛 国立研究開発法人物質・材料研究機構, ナノアーキテクトニクス材料研究センター, 主幹研究員 (30571822)
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| Co-Investigator(Kenkyū-buntansha) |
KHADKA Dhruba 国立研究開発法人物質・材料研究機構, エネルギー・環境材料研究センター, 主任研究員 (70793173)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Keywords | 量子ドット / ナノ粒子 / perovskite quantum dots / quantum dots / ナノクリスタル / スズ系ペロブスカイト / 太陽電池 / 湿式合成 |
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| Outline of Research at the Start |
ハロゲン化物ペロブスカイト太陽電池(PSC)は低コスト発電技術として期待されている。しかしながら、優れた発電性能をもたらす鉛系有機/無機ハロゲン化物ペロブスカイトは安定性と毒性の問題に悩まされている。この問題を解決するために、非鉛系オール無機ABX3型量子ドット(PQD)を湿式合成そして当該PQDを構成要素とする太陽電池を開発することを提案する。具体的には、AおよびBサイトにそれぞれ1価および2価の金属がドープ(または合金化)されたオール無機のCsSnI3 PQDの研究に焦点を当てる。合成に際しては理論計算に基づく組成のスクリーニングを行う。
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| Outline of Annual Research Achievements |
The purpose of this project is to develop an innovative approach to explore and synthesize high-quality all-inorganic tin-based halide perovskite quantum dots for solar cells. In 2021, the defect formation mechanism was evaluated by density functional theory, and the synthesis parameters, especially the effect of capping agent on the properties of perovskite quantum dots was investigated. Introducing a small amount of zwitterionic phosphatidylcholine in the reaction was found to be important for regulating the growth kinetics of CsSnX3 perovskite quantum dots, which otherwise merely leads to the formation of large-sized powders.
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
(1) The formation of intermediate complexes between zwitterionic phosphatidylcholine and the precursors and the steric hindrance effect of branched fatty acid side-chains of phosphatidylcholine were identified to be the reason for regulating the growth kinetics of CsSnX3. This may inspire more research on the synthesis of high-quality tin-based perovskite quantum dots. This finding was published in Nanoscale.
(2) The theoretical calculation points to a new way to obtain high-quality tin-based perovskite quantum dots, which is being prepared for submission to an international peer-reviewed journal.
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| Strategy for Future Research Activity |
On one hand, the synthetic strategy will be further optimized, and the surface passivation of these perovskite quantum dots will be carried out. On the other hand, the use of perovskite quantum dots for constructing solar cells will be tried.
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Report
(1 results)
Research Products
(5 results)
