Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin
Published studies of layered (2D) (100)‐oriented hybrid lead‐bromide perovskites evidence a correlation between increased inter‐octahedral (Pb‐Br‐Pb) distortions and the appearance of broadband white light emission. However, the impact of distortions within their constituent [PbBr6]4− octahedra has...
| Main Authors: | , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/143499 |
| _version_ | 1826116812984549376 |
|---|---|
| author | Febriansyah, Benny Borzda, Tetiana Cortecchia, Daniele Neutzner, Stefanie Folpini, Giulia Koh, Teck Ming Li, Yongxin Mathews, Nripan Petrozza, Annamaria England, Jason |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Febriansyah, Benny Borzda, Tetiana Cortecchia, Daniele Neutzner, Stefanie Folpini, Giulia Koh, Teck Ming Li, Yongxin Mathews, Nripan Petrozza, Annamaria England, Jason |
| author_sort | Febriansyah, Benny |
| collection | NTU |
| description | Published studies of layered (2D) (100)‐oriented hybrid lead‐bromide perovskites evidence a correlation between increased inter‐octahedral (Pb‐Br‐Pb) distortions and the appearance of broadband white light emission. However, the impact of distortions within their constituent [PbBr6]4− octahedra has yet to be assessed. Herein, we report two new (100)‐oriented 2D Pb‐Br perovskites, whose structures display unusually high intra‐octahedral distortions, whilst retaining minimal inter‐octahedral distortions. Using a combination of temperature‐dependent, power‐dependent and time‐resolved photoluminescence spectroscopic measurements, we show that increased intra‐octahedral distortion induces exciton localization processes and leads to formation of multiple photoinduced emissive colour centres. Ultimately, this leads to highly Stokes‐shifted, ultrabroad white light emission at room temperature. |
| first_indexed | 2024-10-01T04:17:34Z |
| format | Journal Article |
| id | ntu-10356/143499 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:17:34Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1434992021-01-08T01:28:40Z Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin Febriansyah, Benny Borzda, Tetiana Cortecchia, Daniele Neutzner, Stefanie Folpini, Giulia Koh, Teck Ming Li, Yongxin Mathews, Nripan Petrozza, Annamaria England, Jason School of Materials Science and Engineering School of Physical and Mathematical Sciences Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Research Techno Plaza Science::Chemistry::Inorganic chemistry Science::Physics Crystal Engineering Intra-octahedral Distortion Published studies of layered (2D) (100)‐oriented hybrid lead‐bromide perovskites evidence a correlation between increased inter‐octahedral (Pb‐Br‐Pb) distortions and the appearance of broadband white light emission. However, the impact of distortions within their constituent [PbBr6]4− octahedra has yet to be assessed. Herein, we report two new (100)‐oriented 2D Pb‐Br perovskites, whose structures display unusually high intra‐octahedral distortions, whilst retaining minimal inter‐octahedral distortions. Using a combination of temperature‐dependent, power‐dependent and time‐resolved photoluminescence spectroscopic measurements, we show that increased intra‐octahedral distortion induces exciton localization processes and leads to formation of multiple photoinduced emissive colour centres. Ultimately, this leads to highly Stokes‐shifted, ultrabroad white light emission at room temperature. Accepted version 2020-09-04T08:45:43Z 2020-09-04T08:45:43Z 2020 Journal Article Febriansyah, B., Borzda, T., Cortecchia, D., Neutzner, S., Folpini, G., Koh, T. M., ... England, J. (2020). Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin. Angewandte Chemie, 59(27), 10791-10796. doi:10.1002/ange.201915708 0044-8249 https://hdl.handle.net/10356/143499 10.1002/ange.201915708 27 59 10791 10796 en Angewandte Chemie This is the accepted version of the following article:Febriansyah, B., Borzda, T., Cortecchia, D., Neutzner, S., Folpini, G., Koh, T. M., ... England, J. (2020). Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin. Angewandte Chemie, 59(27), 10791-10796. doi:10.1002/ange.201915708, which has been published in final form at 10.1002/ange.201915708. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html]. application/pdf |
| spellingShingle | Science::Chemistry::Inorganic chemistry Science::Physics Crystal Engineering Intra-octahedral Distortion Febriansyah, Benny Borzda, Tetiana Cortecchia, Daniele Neutzner, Stefanie Folpini, Giulia Koh, Teck Ming Li, Yongxin Mathews, Nripan Petrozza, Annamaria England, Jason Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin |
| title | Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin |
| title_full | Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin |
| title_fullStr | Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin |
| title_full_unstemmed | Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin |
| title_short | Metal coordination sphere deformation induced highly Stokes‐shifted, ultra broadband emission in 2D hybrid lead‐bromide perovskites and investigation of its origin |
| title_sort | metal coordination sphere deformation induced highly stokes shifted ultra broadband emission in 2d hybrid lead bromide perovskites and investigation of its origin |
| topic | Science::Chemistry::Inorganic chemistry Science::Physics Crystal Engineering Intra-octahedral Distortion |
| url | https://hdl.handle.net/10356/143499 |
| work_keys_str_mv | AT febriansyahbenny metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT borzdatetiana metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT cortecchiadaniele metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT neutznerstefanie metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT folpinigiulia metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT kohteckming metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT liyongxin metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT mathewsnripan metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT petrozzaannamaria metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin AT englandjason metalcoordinationspheredeformationinducedhighlystokesshiftedultrabroadbandemissionin2dhybridleadbromideperovskitesandinvestigationofitsorigin |