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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202207993
|2 doi
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|a eng
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|a Sánchez, Rafael S
|e verfasserin
|4 aut
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|a Radiative Recombination Processes in Halide Perovskites Observed by Light Emission Voltage Modulated Spectroscopy
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|c 2023
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 20.03.2023
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|a Date Revised 20.03.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
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|a The kinetics of light emission in halide perovskite light-emitting diodes (LEDs) and solar cells is composed of a radiative recombination of voltage-injected carriers mediated by additional steps such as carrier trapping, redistribution of injected carriers, and photon recycling that affect the observed luminescence decays. These processes are investigated in high-performance halide perovskite LEDs, with external quantum efficiency (EQE) and luminance values higher than 20% and 80 000 Cd m-2 , by measuring the frequency-resolved emitted light with respect to modulated voltage through a new methodology termed light emission voltage modulated spectroscopy (LEVS). The spectra are shown to provide detailed information on at least three different characteristic times. Essentially, new information is obtained with respect to the electrical method of impedance spectroscopy (IS), and overall, LEVS shows promise to capture internal kinetics that are difficult to be discerned by other techniques
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|a Journal Article
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|a halide perovskites
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4 |
|a light-emission kinetics
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|a light-emitting diodes
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|a radiative recombination
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|a solar cells
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|a Villanueva-Antolí, Alexis
|e verfasserin
|4 aut
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| 700 |
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|a Bou, Agustín
|e verfasserin
|4 aut
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| 700 |
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|a Ruiz-Murillo, Marta
|e verfasserin
|4 aut
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|a Mora-Seró, Iván
|e verfasserin
|4 aut
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| 700 |
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|a Bisquert, Juan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 11 vom: 12. März, Seite e2207993
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:35
|g year:2023
|g number:11
|g day:12
|g month:03
|g pages:e2207993
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|u http://dx.doi.org/10.1002/adma.202207993
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