研究課題/領域番号 |
17K05033
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研究機関 | 奈良先端科学技術大学院大学 |
研究代表者 |
JUNG MINCHERL 奈良先端科学技術大学院大学, 先端科学技術研究科, 特任助教 (40632071)
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研究期間 (年度) |
2017-04-01 – 2020-03-31
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キーワード | THz-wave absorption / Pb-I vibration mode / Defects / OHP / Chemical state / Atomic structure |
研究実績の概要 |
- We have estibilished the SVE method to control defects in organohalide hybrid perovskite (OHP) thin film. - In the case of MAPbI3, we found the THz-wave absorption at 1.58 THz with 50% of transmission and 11000 cm-1 of absorption coefficient which is originated from CH3NH2 molecular defect incorporated perovskite structure. (New finding of physical property) - In the case of FAPbI3, we found the THz-wave absorption at 1.62 THz with 60% of transmission which is originated from delta- and alpha-phse mixed perovskite structure.(New finding of physical property) - From these results, we confirmed that the understanding of Pb-I (metal cation-halogen anion) vibration mode with defect structure is the main key to control the THz-wave absorption property.
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現在までの達成度 (区分) |
現在までの達成度 (区分)
1: 当初の計画以上に進展している
理由
At the last year, three students (MS 2, Ph.D 1) had joined in my research and the research speed was boosted up. That reason was why we obtained several important results.
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今後の研究の推進方策 |
1. Finding a protection material and confirming an interface state - To avoid any contamination on OHP thin film - To understand an interface state such as intermixed state 2. Fabrication of halogen mixed hybrid perovskite and its THz-wave absorption property 3. Understanding a fundamental phonon dispersion for THz-wave absorption 4. If possbile, we will try to make a test device for THz-wave sensing.
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