دورية أكاديمية
Preparation of CsPb(Cl/Br)3/TiO2: Eu3+ composites for white light emitting diodes
| العنوان: | Preparation of CsPb(Cl/Br)3/TiO2: Eu3+ composites for white light emitting diodes |
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| المؤلفون: | Chen Zhang, Minqiang Wang, Jindou Shi, Junnan Wang, Zheyuan Da, Yun Zhou, Youlong Xu, Gaponenko, N. V., Arshad Saleem Bhatti |
| بيانات النشر: | Frontiers Media S.A. |
| سنة النشر: | 2023 |
| المجموعة: | Belarusian State University of Informatics and Radioelectronics (BSUIR): Repository / Репозиторий БГУИР (Белорусский государственный университет информатики и радиоэлектроники) |
| مصطلحات موضوعية: | публикации ученых, perovskite, anatase, nano-materials |
| جغرافية الموضوع: | Швейцария |
| الوصف: | The inherent single narrow emission peak and fast anion exchange process of cesium lead halide perovskite CsPbX3 (X = Cl, Br, I) nanocrystals severely limited its application in white light-emitting diodes. Previous studies have shown that composite structures can passivate surface defects of NCs and improve the stability of perovskite materials, but complex post-treatment processes commonly lead to dissolution of NCs. In this study, CsPb(Cl/Br)3 NCs was insitugrown in TiO2 hollow shells doped with Eu3+ ions by a modified thermal injection method to prepare CsPb(Cl/Br)3/TiO2:Eu3+ composites with direct excitation of white light without additional treatment. Among them, the well-crystalline TiO2 shells acted as both a substrate for the dopant, avoiding the direct doping of Eu3+ into the interior of NCs to affect the crystal structure of the perovskite materials, and also as a protection layer to isolate the contact between PL quenching molecules and NCs, which significantly improves the stability. Further, the WLED prepared using the composites had bright white light emission, luminous efficiency of 87.39 lm/W, and long-time operating stability, which provided new options for the development of perovskite devices. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| العلاقة: | Preparation of CsPb(Cl/Br)3/TiO2: Eu3+ composites for white light emitting diodes / Chen Zhang [et al.] // Frontiers in Chemistry. – 2023. – V. 11. – P. 1–9.; https://libeldoc.bsuir.by/handle/123456789/54126Test; https://doi.org/10.3389/fchem.2023.1199863Test |
| DOI: | 10.3389/fchem.2023.1199863 |
| الإتاحة: | https://doi.org/10.3389/fchem.2023.1199863Test https://libeldoc.bsuir.by/handle/123456789/54126Test |
| رقم الانضمام: | edsbas.2B5E23DB |
| قاعدة البيانات: | BASE |
| DOI: | 10.3389/fchem.2023.1199863 |
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