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Part 1: Document Description
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Citation |
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Title: |
Replication Data for: Low threshold and efficient multiple exciton generation in halide perovskite nanocrystals |
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Identification Number: |
doi:10.21979/N9/HJGXR3 |
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Distributor: |
DR-NTU (Data) |
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Date of Distribution: |
2019-01-15 |
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Version: |
1 |
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Bibliographic Citation: |
Li, Mingjie; Raihana Begum; Jianhui Fu; Qiang Xu; Teck Ming Koh; Sjoerd A. Veldhuis; Michael Grätzel; Nripan Mathews; Subodh Mhaisalkar; Sum, Tze Chien, 2019, "Replication Data for: Low threshold and efficient multiple exciton generation in halide perovskite nanocrystals", https://doi.org/10.21979/N9/HJGXR3, DR-NTU (Data), V1 |
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Citation |
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Title: |
Replication Data for: Low threshold and efficient multiple exciton generation in halide perovskite nanocrystals |
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Identification Number: |
doi:10.21979/N9/HJGXR3 |
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Authoring Entity: |
Li, Mingjie (Nanyang Technological University) |
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Raihana Begum (Nanyang Technological University) |
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Jianhui Fu (Nanyang Technological University) |
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Qiang Xu (Nanyang Technological University) |
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Teck Ming Koh (Nanyang Technological University) |
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Sjoerd A. Veldhuis (Nanyang Technological University) |
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Michael Grätzel (Swiss Federal Institute of Technology) |
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Nripan Mathews (Nanyang Technological University) |
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Subodh Mhaisalkar (Nanyang Technological University) |
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Sum, Tze Chien (Nanyang Technological University) |
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Software used in Production: |
Origin |
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Grant Number: |
start-up grant M4080514 |
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Grant Number: |
M4082176 |
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Grant Number: |
AcRF Tier 1 grant RG173/16 |
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Grant Number: |
Tier 2 grant MOE2015-T2-2-015 |
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Grant Number: |
Tier 2 grant MOE2016-T2-1-034 |
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Grant Number: |
Competitive Research Program NRF-CRP14-2014-03 |
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Grant Number: |
NRF Investigatorship Program NRF-NRFI2018- 04 |
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Grant Number: |
ONRGNICOP- N62909-17-1-2155 |
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Distributor: |
DR-NTU (Data) |
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Access Authority: |
Sum Tze Chien |
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Depositor: |
Li, Mingjie |
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Date of Deposit: |
2018-11-30 |
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Holdings Information: |
https://doi.org/10.21979/N9/HJGXR3 |
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Study Scope |
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Keywords: |
Chemistry, Physics, Chemistry, Physics, Perovskitte, Quantum dots, Multiple exciton generation |
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Abstract: |
Multiple exciton generation (MEG) or carrier multiplication, a process that spawns two or more electron–hole pairs from an absorbed high-energy photon (larger than two times bandgap energy Eg), is a promising way to augment the photocurrent and overcome the Shockley–Queisser limit. Conventional semiconductor nanocrystals, the forerunners, face severe challenges from fast hot-carrier cooling. Perovskite nanocrystals possess an intrinsic phonon bottleneck that prolongs slow hot-carrier cooling, transcending these limitations. Herein, we demonstrate enhanced MEG with 2.25Eg threshold and 75% slope efficiency in intermediate-confined colloidal formamidinium lead iodide nanocrystals, surpassing those in strongly confined lead sulfide or lead selenide incumbents. Efficient MEG occurs via inverse Auger process within 90 fs, afforded by the slow cooling of energetic hot carriers. These nanocrystals circumvent the conundrum over enhanced Coulombic coupling and reduced density of states in strongly confined nanocrystals. These insights may lead to the realization of next generation of solar cells and efficient optoelectronic devices. |
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Kind of Data: |
experimental 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: |
10.1038/s41467-018-06596-1 |
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Bibliographic Citation: |
Li, M., Begum, R., Fu, J., Xu, Q., Koh, T. M., Veldhuis, S. A., ... & Sum, T. C. (2018). Low threshold and efficient multiple exciton generation in halide perovskite nanocrystals. Nature communications, 9(1), 1-7. |
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Citation |
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Identification Number: |
10356/82965 |
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Bibliographic Citation: |
Li, M., Begum, R., Fu, J., Xu, Q., Koh, T. M., Veldhuis, S. A., ... & Sum, T. C. (2018). Low threshold and efficient multiple exciton generation in halide perovskite nanocrystals. Nature communications, 9(1), 1-7. |
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data of Fig 1 in main text |
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