DOI: 10.1002/adfm.201505324. The Effects of Electronic Impurities and Electron–Hole Recombination Dynamics on Large‐Grain Organic–Inorganic Perovskite Photovoltaic Efficiencies

The Effects of Electronic Impurities and Electron–Hole Recombination Dynamics on Large‐Grain Organic–Inorganic Perovskite Photovoltaic Efficiencies

10.1002/adfm.201505324

Crossref journal-article

Wiley

Advanced Functional Materials (311)

Abstract

Hybrid organic‐inorganic perovskites have attracted considerable attention after promising developments in energy harvesting and other optoelectronic applications. However, further optimization will require a deeper understanding of the intrinsic photophysics of materials with relevant structural characteristics. Here, the dynamics of photoexcited charge carriers in large‐area grain organic‐inorganic perovskite thin films is investigated via confocal time‐resolved photoluminescence spectroscopy. It is found that the bimolecular recombination of free charges is the dominant decay mechanism at excitation densities relevant for photovoltaic applications. Bimolecular coefficients are found to be on the order of 10−9 cm3 s−1, comparable to typical direct‐gap semiconductors, yet significantly smaller than theoretically expected. It is also demonstrated that there is no degradation in carrier transport in these thin films due to electronic impurities. Suppressed electron–hole recombination and transport that is not limited by deep level defects provide a microscopic model for the superior performance of large‐area grain hybrid perovskites for photovoltaic applications.

Bibliography

Blancon, J., Nie, W., Neukirch, A. J., Gupta, G., Tretiak, S., Cognet, L., Mohite, A. D., & Crochet, J. J. (2016). The Effects of Electronic Impurities and ElectronâHole Recombination Dynamics on LargeâGrain OrganicâInorganic Perovskite Photovoltaic Efficiencies. Advanced Functional Materials, 26(24), 4283â4292. Portico.

Authors 8

Jean‐Christophe Blancon (first)
Wanyi Nie (additional)
Amanda J. Neukirch (additional)
Gautam Gupta (additional)
Sergei Tretiak (additional)
Laurent Cognet (additional)
Aditya D. Mohite (additional)
Jared J. Crochet (additional)

References 66 Referenced 75

Dates

Type	When
Created	9 years, 4 months ago (April 27, 2016, 2:54 p.m.)
Deposited	1 year, 10 months ago (Oct. 5, 2023, 9:32 p.m.)
Indexed	2 days, 3 hours ago (Aug. 30, 2025, 1:13 p.m.)
Issued	9 years, 4 months ago (April 27, 2016)
Published	9 years, 4 months ago (April 27, 2016)
Published Online	9 years, 4 months ago (April 27, 2016)
Published Print	9 years, 3 months ago (June 1, 2016)

Funders 0

None

BibTeX

@article{Blancon_2016, title={The Effects of Electronic Impurities and Electron–Hole Recombination Dynamics on Large‐Grain Organic–Inorganic Perovskite Photovoltaic Efficiencies}, volume={26}, ISSN={1616-3028}, url={http://dx.doi.org/10.1002/adfm.201505324}, DOI={10.1002/adfm.201505324}, number={24}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Blancon, Jean‐Christophe and Nie, Wanyi and Neukirch, Amanda J. and Gupta, Gautam and Tretiak, Sergei and Cognet, Laurent and Mohite, Aditya D. and Crochet, Jared J.}, year={2016}, month=apr, pages={4283–4292} }

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