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Part 1: Document Description
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Citation |
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Title: |
Replication Data for: Origins of the Long-Range Exciton Diffusion in Perovskite Nanocrystal Films: Photon Recycling vs Exciton Hopping |
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Identification Number: |
doi:10.21979/N9/6QTW2E |
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Distributor: |
DR-NTU (Data) |
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Date of Distribution: |
2021-02-25 |
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Version: |
1 |
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Bibliographic Citation: |
Giovanni, David; Righetto, Marcello; Zhang, Qiannan; Lim, Jia Wei Melvin; Ramesh, Sankaran; Sum, Tze Chien, 2021, "Replication Data for: Origins of the Long-Range Exciton Diffusion in Perovskite Nanocrystal Films: Photon Recycling vs Exciton Hopping", https://doi.org/10.21979/N9/6QTW2E, DR-NTU (Data), V1 |
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Citation |
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Title: |
Replication Data for: Origins of the Long-Range Exciton Diffusion in Perovskite Nanocrystal Films: Photon Recycling vs Exciton Hopping |
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Identification Number: |
doi:10.21979/N9/6QTW2E |
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Authoring Entity: |
Giovanni, David (Nanyang Technological University) |
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Righetto, Marcello (Nanyang Technological University) |
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Zhang, Qiannan (Nanyang Technological University) |
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Lim, Jia Wei Melvin (Nanyang Technological University) |
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Ramesh, Sankaran (Nanyang Technological University) |
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Sum, Tze Chien (Nanyang Technological University) |
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Software used in Production: |
Originlab |
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Software used in Production: |
Microsoft Excel |
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Software used in Production: |
MATLAB |
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Grant Number: |
start-up grant M4080514 |
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Grant Number: |
start-up grant M4081630 |
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Grant Number: |
AcRF Tier 1 grant (RG91/19) |
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Grant Number: |
Tier 2 grant MOE2016-T2-1-034 |
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Grant Number: |
Tier 2 grant MOE2017-T2-1-001 |
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Grant Number: |
Tier 2 grant MOE2017-T2-2-002 |
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Grant Number: |
NRF Investigatorship NRF-NRFI-2018-04 |
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Grant Number: |
Competitive Research Programme NRF-CRP14-2014-03 |
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Distributor: |
DR-NTU (Data) |
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Access Authority: |
Giovanni, David |
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Access Authority: |
Sum, Tze Chien |
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Depositor: |
Giovanni, David |
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Date of Deposit: |
2020-11-12 |
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Holdings Information: |
https://doi.org/10.21979/N9/6QTW2E |
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Study Scope |
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Keywords: |
Physics, Physics, Perovskite Nanocrystals, Photon Recycling, Exciton Diffusion, PL imaging |
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Abstract: |
The outstanding optoelectronic performance of lead halide perovskites lies in their exceptional carrier diffusion properties. As the perovskite material dimensionality is reduced to exploit the quantum confinement effects, the disruption to the perovskite lattice, often with insulating organic ligands, raises new questions on the charge diffusion properties. Herein, we report direct imaging of >1 μm exciton diffusion lengths in CH3NH3PbBr3 perovskite nanocrystal (PNC) films. Surprisingly, the resulting exciton mobilities in these PNC films can reach 10 ± 2 cm^2 V^-1 s^-1, which is counterintuitively several times higher than the carrier mobility in 3D perovskite films. We show that this ultralong exciton diffusion originates from both efficient inter-NC exciton hopping (via Förster energy transfer) and the photon recycling process with a smaller yet significant contribution. Importantly, our study not only sheds new light on the highly debated origins of the excellent exciton diffusion in PNC films but also highlights the potential of PNCs for optoelectronic applications. |
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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/s41377-020-00443-z |
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Bibliographic Citation: |
Giovanni, D., Righetto, M., Zhang, Q., Lim, J. W. M., Ramesh, S., & Sum, T. C. (2021). Origins of the long-range exciton diffusion in perovskite nanocrystal films: photon recycling vs exciton hopping. Light: Science & Applications, 10(1), 1-9. |
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Citation |
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Identification Number: |
10356/145997 |
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Bibliographic Citation: |
Giovanni, D., Righetto, M., Zhang, Q., Lim, J. W. M., Ramesh, S., & Sum, T. C. (2021). Origins of the long-range exciton diffusion in perovskite nanocrystal films: photon recycling vs exciton hopping. Light: Science & Applications, 10(1), 1-9. |
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Label: |
Fig. 1.zip |
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Notes: |
application/zip |
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Label: |
Fig. 2.zip |
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Notes: |
application/zip |
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Label: |
Fig. 3.zip |
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Notes: |
application/zip |
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Label: |
Supplementary Info.zip |
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Notes: |
application/zip |