| Autor: |
Lee, Young Mi, Yun, Jung-Ho, Matsuyama, Asuka, Kobori, Sora, Maeng, Inhee, Lyu, Miaoqiang, Wang, Shenghao, Wang, Lianzhou, Jung, Min-Cherl, Nakamura, Masakazu |
| Zdroj: |
Applied Physics Express (APEX); May 2019, Vol. 12 Issue: 5 p051003-051003, 1p |
| Abstrakt: |
The flexible and mixed ?- and ?-formamidinium lead iodide (FAPbI3) hybrid perovskite thin films fabricated by the sequential vacuum evaporation method (SVE) were studied using the THz-wave absorption property. The formed FAPbI3using SVE showed the typical ?-phase. After annealing for 10 min, we confirmed a mixed state with ?- and ?-phases and observed THz-wave absorption at 1.62 THz with 40% absorptance. In the C 1score-level spectra, we found two different chemical states originated from ?- and ?-FAPbI3. The origin of the THz-wave absorption property is assumed from a significant Pb-I vibration mode from the mixed phases in FAPbI3. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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