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Stoddard RJ, Eickemeyer FT, Katahara JK, et al. Correlation between Photoluminescence and Carrier Transport and a Simple In Situ Passivation Method for High-Bandgap Hybrid Perovskites. J Phys Chem Lett. 2017;8(14):3289-3298doi: 10.1021/acs.jpclett.7b01185.
Stoddard, R. J., Eickemeyer, F. T., Katahara, J. K., & Hillhouse, H. W. (2017). Correlation between Photoluminescence and Carrier Transport and a Simple In Situ Passivation Method for High-Bandgap Hybrid Perovskites. The journal of physical chemistry letters, 8(14), 3289-3298. https://doi.org/10.1021/acs.jpclett.7b01185
Stoddard, Ryan J, et al. "Correlation between Photoluminescence and Carrier Transport and a Simple In Situ Passivation Method for High-Bandgap Hybrid Perovskites." The journal of physical chemistry letters vol. 8,14 (2017): 3289-3298. doi: https://doi.org/10.1021/acs.jpclett.7b01185
Stoddard RJ, Eickemeyer FT, Katahara JK, Hillhouse HW. Correlation between Photoluminescence and Carrier Transport and a Simple In Situ Passivation Method for High-Bandgap Hybrid Perovskites. J Phys Chem Lett. 2017 Jul 20;8(14):3289-3298. doi: 10.1021/acs.jpclett.7b01185. Epub 2017 Jul 10. PMID: 28636388.
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J Phys Chem Lett. 2017 Jul 20;8(14):3289-3298. doi: 10.1021/acs.jpclett.7b01185. Epub 2017 Jul 10.

Correlation between Photoluminescence and Carrier Transport and a Simple In Situ Passivation Method for High-Bandgap Hybrid Perovskites.

The journal of physical chemistry letters

Ryan J Stoddard, Felix T Eickemeyer, John K Katahara, Hugh W Hillhouse

Affiliations

  1. Department of Chemical Engineering, Clean Energy Institute, and Molecular Engineering & Sciences Institute, University of Washington , Seattle, Washington 98105, United States.

PMID: 28636388 DOI: 10.1021/acs.jpclett.7b01185

Abstract

High-bandgap mixed-halide hybrid perovskites have higher open-circuit voltage deficits and lower carrier diffusion lengths than their lower-bandgap counterparts. We have developed a ligand-assisted crystallization (LAC) technique that introduces additives in situ during the solvent wash and developed a new method to dynamically measure the absolute intensity steady-state photoluminescence and the mean carrier diffusion length simultaneously. The measurements reveal four distinct regimes of material changes and show that photoluminescence brightening often coincides with losses in carrier transport, such as in degradation or phase segregation. Further, the measurements enabled optimization of LAC on the 1.75 eV bandgap FA

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