Holy Water Photo-Brightening in Quasi-2D Perovskite Films under Ambient Enables Highly Performing Light-Emitting Diodes /
Quasi-2D perovskites provide new opportunities for lighting and display applications due to their high radiative recombination and excellent stability. However, seldom attention has been placed on their self-stability/working operation under ambient storage. Herein, quasi-2D perovskites/Polyethylene...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
2023
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| Sorozat: | ADVANCED FUNCTIONAL MATERIALS
33 No. 7 |
| Tárgyszavak: | |
| doi: | 10.1002/adfm.202209249 |
| mtmt: | 33773826 |
| Online Access: | http://publicatio.bibl.u-szeged.hu/36611 |
| LEADER | 02604nab a2200337 i 4500 | ||
|---|---|---|---|
| 001 | publ36611 | ||
| 005 | 20250430112828.0 | ||
| 008 | 250430s2023 hu o 000 eng d | ||
| 022 | |a 1616-301X | ||
| 024 | 7 | |a 10.1002/adfm.202209249 |2 doi | |
| 024 | 7 | |a 33773826 |2 mtmt | |
| 040 | |a SZTE Publicatio Repozitórium |b hun | ||
| 041 | |a eng | ||
| 100 | 1 | |a Duan Y. | |
| 245 | 1 | 0 | |a Holy Water |h [elektronikus dokumentum] : |b Photo-Brightening in Quasi-2D Perovskite Films under Ambient Enables Highly Performing Light-Emitting Diodes / |c Duan Y. |
| 260 | |c 2023 | ||
| 300 | |a 12 | ||
| 490 | 0 | |a ADVANCED FUNCTIONAL MATERIALS |v 33 No. 7 | |
| 520 | 3 | |a Quasi-2D perovskites provide new opportunities for lighting and display applications due to their high radiative recombination and excellent stability. However, seldom attention has been placed on their self-stability/working operation under ambient storage. Herein, quasi-2D perovskites/Polyethylene oxide (PEO) films are studied, showing an unforeseen photo-brightening effect under ambient storage (i.e., an increase of the photoluminescence quantum yield from 55% to 74% after 100 days). In stark contrast, those stored under a dark/inert atmosphere show a significant decrease down to 38%. This counterintuitive phenomenon responds to the increasing radiative recombination rate caused by the passivation of the surface Br vacancies in the presence of physically adsorbed water molecules, as corroborated by in situ/ex situ X-ray photoelectron spectroscopy and density functional theory calculations. Capitalizing on this surprising effect, stable light-emitting diodes (LEDs) using quasi-2D perovskites/PEO color filters are fabricated, realizing high stabilities of ≈400 h@10 mA under operating ambient conditions, representing a 20-fold enhancement compared to LEDs with 3D counter partners. Hence, this study reveals a unique insight into the impact of water passivation on the optical/structural properties of quasi-2D perovskite films, broadening their applications under operating ambient conditions. © 2022 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH. | |
| 650 | 4 | |a Fizikai tudományok | |
| 700 | 0 | 1 | |a Oropeza F.E. |e aut |
| 700 | 0 | 1 | |a Jin X. |e aut |
| 700 | 0 | 2 | |a Amargós-Reyes O. |e aut |
| 700 | 0 | 2 | |a Atoini Y. |e aut |
| 700 | 0 | 2 | |a Cavinato L.M. |e aut |
| 700 | 0 | 2 | |a Nagy Gergely Norbert |e aut |
| 700 | 0 | 2 | |a Upadhyay Kahaly Mousumi |e aut |
| 700 | 0 | 2 | |a de la Peña O'Shea V.A. |e aut |
| 700 | 0 | 2 | |a Wang D.-Y. |e aut |
| 700 | 0 | 2 | |a Costa R.D. |e aut |
| 856 | 4 | 0 | |u http://publicatio.bibl.u-szeged.hu/36611/1/33773826.pdf |z Dokumentum-elérés |