| Project/Area Number |
12650016
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | SAGA UNIVERSITY |
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Principal Investigator |
ERA Masanao Saga University, Department of Chemistry & Applied chemistry, Associate professor, 理工学部, 助教授 (30191927)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2001: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2000: ¥2,300,000 (Direct Cost: ¥2,300,000)
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| Keywords | lead halide-based layered perovskite / quantum well / self-organization / electroluminescence / microcavity / lasing / organic semiconductor / organic-inorganic heterostructure / 無機ヘテロ構造 / 層状ペロブスカイト / 自己組織性量子井戸 / 量子閉じ込め効果 / 励起子発光 / 電界発光 / 共振器構造 / Langmuir-Blodgett法 |
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| Research Abstract |
This project was conducted toward new type lasing device combined with a self-organized quantum well materials, lead halide-based layered peorvksite, and organic semiconductors. The results of this project are summarized as follows.
1. Enhancement of electroluminescence (EL) efficiency by carrier confinement effect was attained in tri-layered device combined with lead halide-based layered perovskite with a self-organized quantum well structure as emissive layer and organic semiconductor layers. EL efficiency of tri-layered device of hole-transporting organic semiconductor/layered perovksite/ electron-transporting organic semiconductor is about 3 0 times that of double-layered device.
2. We found enhancement of room-temperature exciton emission in lead halide-based layered perovskites by mixing of divalent metal such as Cd, Sn and so on. For example, room-temperature exciton emission intensity in PbBr-based layered perovskite mixed with 20 mol% of Sn was more than 5 times larger than that of corresponding pure PbBr-based layered perovsktite.
3. We successfully prepared lead halide-based layered perovskite thin films by using the Langmuir-Blodgett technique. Employment of the Langmuir-Blodgett technique makes it possible to control film thickness and structure at the monomolecular layer level. Using the Langmuir-Blodgett technique, further, construction of microcavity device using lead halide-based layered perovskites as emissive layer was succeeded.
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