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- With the aim of achieving solid-state PNC films with a high PLQY and stability, a simple centrifugal casting method was noted for its advantages of completing the purification of colloidal PNCs with a narrow size distribution and the preparation of solid-state films in one step, thus avoiding damage to the PL performance of PNCs during the synthesis of the films through the use of multiple processing steps.
www.sciencedirect.com/science/article/pii/S0272884221026912
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Does centrifugal processing improve pl performance of PNCs in solid-state films?
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What is the PL performance of cspbbr3 PNC films?
Dec 1, 2021 · The results showed that the nanocrystal size, structure and PL performance of PNCs in solid-state films can be well maintained compared with the PNC solution after centrifugal processing with the aid of silica encapsulation and Na doping.
- Canyun Zhang, Chenfei Wang, Jin Chen, Fengchao Wang, Jinfang Kong, Lan Li, Hengxing Dong, Yu Sun, Xi...
- 2021
Dec 1, 2021 · Recently, we developed a centrifugal method by combining silica encapsulation and Na + -ion doping techniques to deposit CsPbBr3-based PNC films and enhance their PLQY and stability at the same time. In this work, centrifugally cast CsPbBr3 PNC films encapsulated with silica achieved a rather uniform surface and a high PLQY of 58.0%.
May 16, 2022 · Here we report that highly efficient large-area PeLEDs with high uniformity can be realized through the use of colloidal perovskite nanocrystals (PNCs), decoupling the crystallization of...
Apr 10, 2021 · The loss of the ligand-protecting shell and the formation of surface defects in perovskite halide nanocrystals (PNCs) are the main issues causing deteriorated photoluminescence quantum yield (PLQY) and, thereby, reduced quality of the final product.
- Andrés F. Gualdrón-Reyes, Sofia Masi, Iván Mora-Seró
- 2021
This constitutes a novel open-air and annealing-free technology to manufacture CsPbBr 3−x I x NC thin films with high optical quality and record high photoluminescence quantum yields (PLQY) based on spray-driven halide (Br − to I −) anion exchange in a solid-state phase.
Jan 19, 2024 · Our analysis of the PL results for combinations of perovskite QDs and Au NPs suggests that the primary mechanism behind the PL enhancement in solutions is the accelerated rate of radiative recombination.
Jun 1, 2021 · This procedure affords purified FAPbBr 3 PNCs with PL peak emission at 511 nm, FWHM = 22 nm, and PLQY around 90 ± 9% (Figure 1 C). The improvement of PLQY was accompanied with a change in the PL dynamics of the PNCs, where the carrier lifetime was longer for purified materials than for the as-synthesized ones (Figure 1 D). This fact is ...
