Cited by Violet light excitable organic halides with short ∼ns emissions for multiple optoelectronic applications

Phase Control and Defect Passivation via (2-Aminoethyl)phosphonic Acid-Modified PEDOT:PSS for Blue Perovskite Light-Emitting Devices DOI

Z. Y. Ge, Li Song, Yuan Zhang

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Achieving pure blue emission of perovskite light-emitting diodes (PeLEDs) is great importance for fulfilling full-color display and lighting applications. However, achieving high-performance PeLEDs in bromide quasi-2D (Q2D) perovskites has always been a formidable challenge. Here, an interface engineering strategy proposed to regulate the light color device photoelectric performance simultaneously by employing (2-aminoethyl)phosphonic acid (AEP)-modified poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS). The AEP-PEDOT:PSS not only enhances wettability toward precursor but also coordinates with unsaturated Pb atoms, facilitating growth nanocrystals fewer defects. Thereby, shifted from sky-blue region higher PLQY was achieved. Additionally, incorporation AEP reduces conductivity PEDOT:PSS film, enabling more balanced charge transport device. Consequently, modification achieve external quantum efficiency (EQE) 5.2%, approximately 1.9 times that control Our findings may provide valuable insights helpful guidance development Q2D LEDs.

Language: Английский

Citations

Multiple Chemical Interactions in Additive Engineering of Perovskite for Enhanced Efficiency and Stability of Pure Blue Light-Emitting Diodes DOI

Ziheng Xiong,

Run Zhang, Dezhong Zhang

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2025, Volume and Issue: 16(9), P. 2196 - 2203

Published: Feb. 21, 2025

Additive engineering is extensively employed in perovskite light-emitting diodes (PeLEDs) to enhance the device performance. However, effectiveness of additives restricted, as they generally interact with only one or two components within structure. Consequently, these are unable fulfill comprehensive functional requirements imposed by materials. In this work, we successfully designed and synthesized a multifunctional additive N-(perfluorophenyl)-P,P-diphenylphosphinic amide (PFNPO) via one-step synthesis approach. Multiple chemical interactions can be provided between PFNPO different components, thereby effectively modulating quasi-two-dimensional (quasi-2D) crystallization, passivating coordination-unsaturated Pb defects, suppressing halide ion migration simultaneously. Based on synergistic effects, incorporation pure blue quasi-2D PeLEDs resulted significant enhancement external quantum efficiency from 1.83 4.26%, an operational lifetime that was extended more than 3-fold, improved spectral stability at 466 nm.

Language: Английский

Citations

Synergistic Mixed Halide and Additive Strategy for Efficient Pure Red Quasi-2D Perovskite Light-Emitting Diodes DOI

Fanyuan Meng,

Shengxuan Shi,

Zhao Chen

et al.

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Stable pure red PeLEDs were achieved via a synergistic mixed-halide and TDA strategy, where concurrently passivates defects anchors halides to suppress spectral redshift for high-performance optoelectronics.

Language: Английский

Citations

Violet light excitable organic halides with short ∼ns emissions for multiple optoelectronic applications DOI

Tianrui Zhou,

Yunluo Wang,

Zhiyu Qin

et al.

Materials Chemistry Frontiers, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Novel violet-excitable organic halides with short PL lifetimes (∼ns) enable green lighting and visible light communication (VLC), achieving a −3 dB bandwidth of 22.1 MHz, suggesting the promising potential in VLC.

Language: Английский

Citations