| Autor: |
Young Mi Lee, Jung-Ho Yun, Asuka Matsuyama, Sora Kobori, Inhee Maeng, Miaoqiang Lyu, Shenghao Wang, Lianzhou Wang, Min-Cherl Jung, Masakazu Nakamura |
| Zdroj: |
Applied Physics Express; May2019, Vol. 12 Issue 5, p1-1, 1p |
| Abstrakt: |
The flexible and mixed δ- and α-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 FAPbI3 using SVE showed the typical δ-phase. After annealing for 10 min, we confirmed a mixed state with δ- and α-phases and observed THz-wave absorption at 1.62 THz with 40% absorptance. In the C 1s core-level spectra, we found two different chemical states originated from δ- and α-FAPbI3. The origin of the THz-wave absorption property is assumed from a significant Pb–I vibration mode from the mixed phases in FAPbI3. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
