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Part 1: Document Description
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Citation |
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Title: |
Replication Data for: Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals |
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Identification Number: |
doi:10.21979/N9/IHVBEF |
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Distributor: |
DR-NTU (Data) |
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Date of Distribution: |
2023-12-30 |
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Version: |
1 |
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Bibliographic Citation: |
Lim, Jia Wei Melvin; Guo, Yuanyuan; Feng, Minjun; Cai, Rui; Sum, Tze Chien, 2023, "Replication Data for: Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals", https://doi.org/10.21979/N9/IHVBEF, DR-NTU (Data), V1 |
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Citation |
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Title: |
Replication Data for: Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals |
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Identification Number: |
doi:10.21979/N9/IHVBEF |
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Authoring Entity: |
Lim, Jia Wei Melvin (Nanyang Technological University) |
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Guo, Yuanyuan (Nanyang Technological University) |
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Feng, Minjun (Nanyang Technological University) |
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Cai, Rui (Nanyang Technological University) |
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Sum, Tze Chien (Nanyang Technological University) |
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Software used in Production: |
Microsoft Excel |
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Software used in Production: |
Origin |
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Software used in Production: |
Python |
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Grant Number: |
NTUitive Gap Fund (NGF-2022-11-018) |
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Grant Number: |
IHL Collaboration Seed Grant Award (2022LUX02P01) |
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Grant Number: |
AcRF Tier 2 Grant (MOE-T2EP50120-0004) |
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Grant Number: |
NRF Investigatorship (NRF-NRFI2018-04) |
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Grant Number: |
Competitive Research Program (NRF-CRP25-2020-0004) |
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Distributor: |
DR-NTU (Data) |
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Access Authority: |
Lim, Jia Wei Melvin |
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Access Authority: |
Sum, Tze Chien |
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Depositor: |
Lim, Melvin |
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Date of Deposit: |
2023-12-18 |
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Holdings Information: |
https://doi.org/10.21979/N9/IHVBEF |
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Study Scope |
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Keywords: |
Physics, Physics, perovskite, nanocrystal, spectroscopy, hot carrier |
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Abstract: |
Harnessing quantum confinement (QC) effects in semiconductors to retard hot carrier cooling (HCC) is an attractive approach for enabling efficient hot carrier extraction to overcome the Shockley−Queisser limit. However, there is a debate about whether halide perovskite nanocrystals (PNCs) can effectively exploit these effects. To address this, we utilized pump−probe and multipulse pump−push−probe spectroscopy to investigate HCC behavior in PNCs of varying sizes and cation compositions. Our results validate the presence of an intrinsic phonon bottleneck with clear manifestations of QC effects in small CsPbBr3 PNCs exhibiting slower HCC rates compared to those of larger PNCs. However, the replacement of inorganic Cs+ with organic cations suppresses this intrinsic bottleneck. Furthermore, PNCs exhibit distinct size-dependent HCC behavior in response to changes in the cold carrier densities. We attribute this to the enhanced exciton−exciton interactions in strongly confined PNCs that facilitate Auger heating. Importantly, our findings dispel the existing controversy and provide valuable insights into design principles for engineering QC effects in PNC hot carrier applications. |
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Kind of Data: |
raw data, fitting data, simulation data |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Other Study Description Materials |
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Related Publications |
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Citation |
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Identification Number: |
10.1021/jacs.3c09761 |
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Bibliographic Citation: |
Lim, J. W. M.; Guo, Y.; Feng, M.; Cai, R.; Sum, T. C. (2023). Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals. J. Am. Chem. Soc. 146, 1, 437- 449. |
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Citation |
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Identification Number: |
10356/172922 |
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Bibliographic Citation: |
Lim, J. W. M.; Guo, Y.; Feng, M.; Cai, R.; Sum, T. C. (2023). Making and Breaking of Exciton Cooling Bottlenecks in Halide Perovskite Nanocrystals. J. Am. Chem. Soc. 146, 1, 437- 449. |
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Label: |
Fig 1.rar |
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Text: |
Consolidated raw data and processed data for Figure 1 of main text |
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Notes: |
application/x-rar-compressed |
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Fig 2.rar |
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Text: |
Consolidated raw data and processed data for Figure 2 of main text |
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Notes: |
application/x-rar-compressed |
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Label: |
Fig 3.rar |
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Text: |
Consolidated raw data and processed data for Figure 3 of main text |
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Notes: |
application/x-rar-compressed |
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Label: |
Fig 4.rar |
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Text: |
Consolidated raw data and processed data for Figure 4 of main text |
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Notes: |
application/x-rar-compressed |
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Label: |
SI.rar |
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Text: |
Consolidated raw data and processed data for figures in the supplementary information |
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Notes: |
application/x-rar-compressed |