Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite
© 2019 American Chemical Society. Despite the excellent power conversion efficiency of multiple-cation mixed halide perovskite solar cells (PSCs), the underlying mechanisms in its efficiency improvement remain unclear. To promote the research and development of advanced PSCs, it is essential to...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | English |
| Published: |
AMER CHEMICAL SOC
2019
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/82061 |
| _version_ | 1848764468227473408 |
|---|---|
| author | Pham, H.T. Duong, T. Rickard, William Kremer, F. Weber, K.J. Wong-Leung, J. |
| author_facet | Pham, H.T. Duong, T. Rickard, William Kremer, F. Weber, K.J. Wong-Leung, J. |
| author_sort | Pham, H.T. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2019 American Chemical Society.
Despite the excellent power conversion efficiency of multiple-cation mixed halide perovskite solar cells (PSCs), the underlying mechanisms in its efficiency improvement remain unclear. To promote the research and development of advanced PSCs, it is essential to understand the influence of mixed inorganic cations on the morphological, structural, and composition properties of perovskite materials. In this research, a detailed study is conducted to clarify the impact of Rb+ and Cs+ cations on the crystallographic structure and phase transition of Rb0.03Cs0.07FA0.765MA0.135PbI2.55Br0.45 hybrid perovskites. Our time-of-flight secondary-ion mass spectrometry results reveal that Rb+ and Cs+ cations were typically segregated at the grain boundary of the perovskite film as a discrete Rb- A nd Cs-rich phase. However, the Cs+ cation was also found to be incorporated into the perovskite structure. Our electron diffraction studies show the visibility of forbidden reflections in the electron diffraction patterns. We propose that these forbidden reflections are a direct result of the perovskite structure and attribute them to superlattice reflections. Furthermore, we show evidence for the coexistence of cubic and tetragonal phases in the diffraction patterns at room temperature. The results presented in this research offer additional insights into the cation incorporation in mixed halide perovskite materials. |
| first_indexed | 2025-11-14T11:19:50Z |
| format | Journal Article |
| id | curtin-20.500.11937-82061 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:19:50Z |
| publishDate | 2019 |
| publisher | AMER CHEMICAL SOC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-820612021-03-09T01:03:06Z Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite Pham, H.T. Duong, T. Rickard, William Kremer, F. Weber, K.J. Wong-Leung, J. Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science SOLAR-CELLS PHASE-TRANSITIONS HIGH-EFFICIENCY RUBIDIUM IODIDE LIGHT STABILIZATION FORMAMIDINIUM PERFORMANCE HYSTERESIS © 2019 American Chemical Society. Despite the excellent power conversion efficiency of multiple-cation mixed halide perovskite solar cells (PSCs), the underlying mechanisms in its efficiency improvement remain unclear. To promote the research and development of advanced PSCs, it is essential to understand the influence of mixed inorganic cations on the morphological, structural, and composition properties of perovskite materials. In this research, a detailed study is conducted to clarify the impact of Rb+ and Cs+ cations on the crystallographic structure and phase transition of Rb0.03Cs0.07FA0.765MA0.135PbI2.55Br0.45 hybrid perovskites. Our time-of-flight secondary-ion mass spectrometry results reveal that Rb+ and Cs+ cations were typically segregated at the grain boundary of the perovskite film as a discrete Rb- A nd Cs-rich phase. However, the Cs+ cation was also found to be incorporated into the perovskite structure. Our electron diffraction studies show the visibility of forbidden reflections in the electron diffraction patterns. We propose that these forbidden reflections are a direct result of the perovskite structure and attribute them to superlattice reflections. Furthermore, we show evidence for the coexistence of cubic and tetragonal phases in the diffraction patterns at room temperature. The results presented in this research offer additional insights into the cation incorporation in mixed halide perovskite materials. 2019 Journal Article http://hdl.handle.net/20.500.11937/82061 10.1021/acs.jpcc.9b09035 English AMER CHEMICAL SOC restricted |
| spellingShingle | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science SOLAR-CELLS PHASE-TRANSITIONS HIGH-EFFICIENCY RUBIDIUM IODIDE LIGHT STABILIZATION FORMAMIDINIUM PERFORMANCE HYSTERESIS Pham, H.T. Duong, T. Rickard, William Kremer, F. Weber, K.J. Wong-Leung, J. Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite |
| title | Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite |
| title_full | Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite |
| title_fullStr | Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite |
| title_full_unstemmed | Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite |
| title_short | Understanding the Chemical and Structural Properties of Multiple-Cation Mixed Halide Perovskite |
| title_sort | understanding the chemical and structural properties of multiple-cation mixed halide perovskite |
| topic | Science & Technology Physical Sciences Technology Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science SOLAR-CELLS PHASE-TRANSITIONS HIGH-EFFICIENCY RUBIDIUM IODIDE LIGHT STABILIZATION FORMAMIDINIUM PERFORMANCE HYSTERESIS |
| url | http://hdl.handle.net/20.500.11937/82061 |