Significant THz-wave absorption property in mixed δ- And α-FAPbI3 hybrid perovskite flexible thin film formed by sequential vacuum evaporation

Young Mi Lee; Jung Ho Yun; Asuka Matsuyama; Sora Kobori; Inhee Maeng; Miaoqiang Lyu; Shenghao Wang; Lianzhou Wang; Min Cherl Jung; Masakazu Nakamura

doi:10.7567/1882-0786/ab0eec

Significant THz-wave absorption property in mixed δ- And α-FAPbI₃ hybrid perovskite flexible thin film formed by sequential vacuum evaporation

Young Mi Lee
, Jung Ho Yun
, Asuka Matsuyama
, Sora Kobori
, Inhee Maeng
, Miaoqiang Lyu
, Shenghao Wang
, Lianzhou Wang
, Min Cherl Jung
, Masakazu Nakamura

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

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.

Original language	English
Article number	051003
Journal	Applied Physics Express
Volume	12
Issue number	5
DOIs	https://doi.org/10.7567/1882-0786/ab0eec
Publication status	Published - 1 May 2019

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Publisher Copyright:
© 2019 The Japan Society of Applied Physics.

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title = "Significant THz-wave absorption property in mixed δ- And α-FAPbI3 hybrid perovskite flexible thin film formed by sequential vacuum evaporation",

abstract = "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.",

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doi = "10.7567/1882-0786/ab0eec",

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T1 - Significant THz-wave absorption property in mixed δ- And α-FAPbI3 hybrid perovskite flexible thin film formed by sequential vacuum evaporation

AU - Lee, Young Mi

AU - Yun, Jung Ho

AU - Matsuyama, Asuka

AU - Kobori, Sora

AU - Maeng, Inhee

AU - Lyu, Miaoqiang

AU - Wang, Shenghao

AU - Wang, Lianzhou

AU - Jung, Min Cherl

AU - Nakamura, Masakazu

PY - 2019/5/1

Y1 - 2019/5/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/85065643109

U2 - 10.7567/1882-0786/ab0eec

DO - 10.7567/1882-0786/ab0eec

M3 - Article

AN - SCOPUS:85065643109

SN - 1882-0778

VL - 12

JO - Applied Physics Express

JF - Applied Physics Express

IS - 5

M1 - 051003

ER -

Significant THz-wave absorption property in mixed δ- And α-FAPbI₃ hybrid perovskite flexible thin film formed by sequential vacuum evaporation

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