التفاصيل البيبلوغرافية
| العنوان: |
Conjugated Ditertiary Ammonium Templated (100)-Oriented 2D Perovskite with Efficient Broad-Band Emission |
| المؤلفون: |
Wantian Yang (10721080), Xinglin Xiao (7707095), Mingkai Li (5823698), Jiarui Hu (10721083), Xingfu Xiao (10931302), Guoliang Tong (10931305), Junnian Chen (1783408), Yunbin He (1411465) |
| سنة النشر: |
1753 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biophysics, Biochemistry, Neuroscience, Pharmacology, Biotechnology, Immunology, Space Science, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, ultrahigh octahedral distortions, 1 D, PbBr 6 slab acts, 2 D TMPDAPbBr 4, 2 D, alkyl ligand, 2 D perovskite, TMHDA, 2 D perovskites, single-source white-light emitters, alkyl ditertiary ammonium cation N, quantum yields, self-trapped excitons, ditertiary ammonium cation N, PLQY, ligand exhibits, bromide perovskite, broad-band emission, 1 D perovskite templated |
| الوصف: |
Two-dimensional (2D) perovskites have emerged as potential single-source white-light emitters in solid-state lighting. However, the quantum yields (PLQY) remain modest, probably ascribed to the limitation of octahedral distortion modulation. Herein, it is demonstrated that the PLQY of 2D lead bromide perovskites can be further enhanced to 12.8% if they contain a bulk and optically active conjugated ditertiary ammonium cation N , N , N ′, N ′-tetramethyl-1,4-phenylenediammonium (TMPDA). The pristine alkyl ditertiary ammonium cation N , N , N ′, N ′-tetramethyl-1,6-hexanediammonium (TMHDA) can only form a 1D lead bromide perovskite with much inferior emission. The robust emission derives from the ultrahigh octahedral distortions associated with self-trapped excitons in 2D TMPDAPbBr 4 . Our experimental and theoretical results further suggest that the efficient broad-band emission in 2D TMPDAPbBr 4 probably involves Förster resonant energy transfer where the optically active organic TMPDA 2+ acts as a donor and the inorganic PbBr 6 slab acts as an acceptor. Moreover, a 2D perovskite based on the conjugated ligand exhibits superior electrical properties compared to a 1D perovskite templated by an alkyl ligand. This work highlights the importance of molecular engineering to enhance the broad-band emission efficiency of 2D perovskites. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/journal_contribution/Conjugated_Ditertiary_Ammonium_Templated_100_-Oriented_2D_Perovskite_with_Efficient_Broad-Band_Emission/14742073 |
| DOI: |
10.1021/acs.chemmater.1c00624.s001 |
| الاتاحة: |
https://doi.org/10.1021/acs.chemmater.1c00624.s001 |
| Rights: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.CC9B3FDB |
| قاعدة البيانات: |
BASE |