دورية أكاديمية
Enabling monodisperse perovskite phase with buried interface modification toward efficient light-emitting diodes
| العنوان: | Enabling monodisperse perovskite phase with buried interface modification toward efficient light-emitting diodes |
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| المؤلفون: | Maowei Jiang, Xiaomeng Zhang, Feijiu Wang |
| المصدر: | Nano Research Energy, Vol 2, Iss 3, Pp e9120069-e9120069 (2023) |
| بيانات النشر: | Tsinghua University Press, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Chemistry LCC:Physics |
| مصطلحات موضوعية: | perovskite light-emitting diode, monodisperse phase, defect passivation, buried interface, large area device, Chemistry, QD1-999, Physics, QC1-999 |
| الوصف: | The performance of perovskite light-emitting diodes (PeLEDs) has been drastically improved recently. Therein, the coexistence of polydisperse perovskite domains has been one worthy subject of study. The crystallization of perovskite is affected by the buried interface character with the bottom contact layer; and the trap states also inherently exist at the buried interface of the perovskite film, which induce the nonradiative recombination and impede the PeLED performance. In this work, we focus on the crystallization modulation of monodisperse perovskite nanodomains toward high-performance PeLEDs. We show that a LiBr pre-modification layer on the bottom substrate induces the formation of monodisperse perovskite phase. In this system, the carrier transferring process deriving from the polydisperse phases is reduced. In addition, the LiBr pre-modification layer at the buried interface minimizes the trap states and enhances the radiative recombination of perovskites. Accordingly, our PeLEDs show a champion external quantum efficiency (EQE) of 25.5% for 4 mm2 device, and 22.9% for 100 mm2 device. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2791-0091 2790-8119 |
| Relation: | https://www.sciopen.com/article/10.26599/NRE.2023.9120069; https://doaj.org/toc/2791-0091; https://doaj.org/toc/2790-8119 |
| DOI: | 10.26599/NRE.2023.9120069 |
| URL الوصول: | https://doaj.org/article/f74aa324474648d4b75c79ff88424e8a |
| رقم الأكسشن: | edsdoj.f74aa324474648d4b75c79ff88424e8a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 27910091 27908119 |
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| DOI: | 10.26599/NRE.2023.9120069 |