Superbly Bright Tin‐Based Perovskite LEDs DOI Open Access

Zeyu Miao,

Jie Guo, Dan Jiang

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Abstract Tin (Sn)‐based perovskites have made notable advances with external quantum efficiency of over 20%, but still exhibit low electroluminescence brightness insufficient for outdoor displays. Here, it is demonstrated that compact phenethylammonium tin iodide (PEA 2 SnI 4 ) films an intact crystal structure can offer high luminance by optimizing the perovskite crystallization rate simultaneously engineering grain surface. Ammonium thiocyanate added to precursor solution generate film PEA x SCN 4‐ and NH I after spin‐coating. Sn 2+ − a strong interaction slows improve quality. During subsequent annealing, from replaces in forming thiourea, which escape leave crystals. It found optimized emitting layers provide outstanding coverage, crystallinity, trap state density, superior photophysical performance. Consequently, impressive 8285 cd m −2 pure red achieved, first report Sn‐based light‐emitting diodes meet display requirements.

Language: Английский

Modulation of Schottky Barrier Height and Electronic Structure in Transition-Metal@Nitrogen-Doped-Carbon Core–Shell Cocatalysts Loaded with MnxCd1–xS Nanorods for Enhanced Photocatalytic Hydrogen Evolution DOI
Yufeng Li, Songqing Zhang, Chunmei He

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 2315 - 2327

Published: Jan. 24, 2025

Language: Английский

Citations

6
Perovskite heteroepitaxy for high-efficiency and stable pure-red LEDs DOI
Keyu Wei, Tong Zhou, Yuanzhi Jiang

et al.

Nature, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Language: Английский

Citations

5
Ten Years of Perovskite Lasers DOI Open Access
Y. G. Shi, Xinyi Deng, Yusong Gan

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Abstract Over the past decade, semiconducting halide perovskite lasers have emerged as a transformative platform in optoelectronics, owing to unique properties such high photoluminescence quantum yields, tunable bandgaps, and low‐cost fabrication processes. This review systematically examines advancements lasers, covering diverse laser architectures, whispering gallery mode, Fabry–Pérot, plasmonic, bound states continuum (BIC), dot, polariton lasers. The mechanisms of optical gain, role material engineering optimizing lasing performance, challenges associated with continuous‐wave (CW) pumping electrically driven are discussed. Furthermore, recent progress improving stability scalability essential for their integration into practical applications displays, communications, sensing, integrated photonics is highlighted. Finally, future research directions discussed, emphasizing potential revolutionize various technological domains by enabling development next‐generation photonic devices.

Language: Английский

Citations

2
Hetero-integrated perovskite/Si3N4 on-chip photonic system DOI
Kun Liao, Yaxiao Lian,

Maotao Yu

et al.

Nature Photonics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

Citations

1
Application of Ultrafast Lasers: A Promising Route toward the Fabrication of Advanced Perovskite‐Based Devices DOI Open Access
Yuhao Zhang,

Youqin Lin,

Zongmin Lin

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 25, 2025

Abstract Perovskite materials have received considerable research attention owing to their high carrier mobility, photoluminescence quantum yield, and light absorption coefficient. Their excellent optoelectronic properties low material costs make them a strong competitive raw for future electronic high‐temperature superconducting materials. In particular, when applied light‐emitting diodes (LEDs) solar cells, conversion efficiency relatively simple preparation process revolutionary that may change the pattern of perovskite‐based devices overcome limits industrialization. However, with development technology, traditional treatment methods perovskites no longer meet increasing demands industry. Laser technology is widely used its remarkable compatibility perovskite Therefore, this review summarizes applications laser materials, including laser‐induced nucleation film formation, annealing, ablation, printing, patterning, discusses achievements researchers in using regulate recent years, highlights prospects technology.

Language: Английский

Citations

1
Efficient Spin‐Light‐Emitting Diodes With Tunable Red to Near‐Infrared Emission at Room Temperature DOI Creative Commons
Jingwen Yao, Yuling Huang, Haifeng Sun

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Abstract Spin light‐emitting diodes (spin‐LEDs) are important for spin‐based electronic circuits as they convert the carrier spin information to optical polarization. Recently, chiral‐induced selectivity (CISS) has emerged a new paradigm enable spin‐LED it does not require any magnetic components and operates at room temperature. However, CISS‐enabled with tunable wavelengths ranging from red near‐infrared (NIR) yet be demonstrated. Here, chiral quasi‐2D perovskites developed fabricate efficient spin‐LEDs NIR region by tuning halide composition. The optimized perovskite films exhibit circularly polarized luminescence 675 788 nm, photoluminescence quantum yield (PLQY) exceeding 86% dissymmetry factor ( g lum ) 8.5 × 10 −3 2.6 −2 . More importantly, direct electroluminescence (CPEL) is achieved temperature in spin‐LEDs. This work demonstrated highest external efficiency (EQE) reaching 12.4% (EL) factors EL 3.7 1.48 composition‐dependent CPEL performance further attributed prolonged lifetime revealed ultrafast transient absorption spectroscopy.

Language: Английский

Citations

1
All-site alloyed perovskite for efficient and bright blue light-emitting diodes DOI Creative Commons
Yu Chen, Ruishan Wang, Gunnar Kusch

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 5, 2025

Perovskite light-emitting diodes have drawn great attention in the fields of displays and lighting, especially for applications requiring high efficiency brightness. While three-dimensional perovskite hold promise achieving higher brightness compared to low-dimensional counterparts, efficient blue remained a challenge due defect formation during disordered crystallization multiple A-cation perovskite. Here we demonstrate an all-site alloy method that enables sequential A-site doping growth formamidinium cesium hybrid This approach significantly reduces trap density film by approximately one order magnitude. Consequently, achieve bright diode with external quantum 23.3%, luminous efficacy 33.4 lm W-1, luminance 5700 cd m-2 emission peak at 487 nm. work provides strategy growing high-quality multicomponent optoelectronics.

Language: Английский

Citations

1
In-Situ Surface Repair of FAPbBr3 Quantum Dots toward High-Performance Pure-Green Perovskite Light-Emitting Diodes DOI
Jibin Zhang,

Dandan Zhang,

Xin Zhou

et al.

Nano Letters, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 20, 2024

Metal halide perovskite light-emitting diodes (PeLEDs) are ideal for high-resolution displays due to their tunable emission, narrow spectra, and low-cost processing. Colloidal FAPbBr

Language: Английский

Citations

7
Ions‐induced Assembly of Perovskite Nanocomposites for Highly Efficient Light‐Emitting Diodes with EQE Exceeding 30% DOI
Zhaohui Xing, Guangrong Jin, Qingguo Du

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(46)

Published: Sept. 23, 2024

Metal halide perovskites, a cost-effective class of semiconductos, hold great promise for display technologies that demand high-efficiency, color-pure light-emitting diodes (LEDs). Early research on three-dimensional (3D) perovskites showed low radiative efficiencies due to modest exciton binding energies. To inprove luminescence, reducing dimensionality or grain size has been common approach. However, dividing the perovskite lattice into smaller units may hinder carrier transport, compromising electrical performance. Moreover, increased surface area introduce additional trap states, leading greater non-radiative recombination. Here, an ions-induced growth method is employed assembe lattice-anchored nanocomposites efficient LEDs with high color purity. This approach enables nanocomposite thin films, composed 3D CsPbBr

Language: Английский

Citations

7
Homogenizing Energy Landscape for Efficient and Spectrally Stable Blue Perovskite Light‐Emitting Diodes DOI

Heng Qi,

Yu Tong, Xuewen Zhang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(46)

Published: Sept. 20, 2024

Blue perovskite light-emitting diodes (PeLEDs) have attracted enormous attention; however, their unsatisfactory device efficiency and spectral stability still remain great challenges. Unfavorable low-dimensional phase distribution defects with deeper energy levels usually cause disorder, substantially limiting the device's performance. Here, an additive-interface optimization strategy is reported to tackle these issues, thus realizing efficient spectrally stable blue PeLEDs. A new type of additive-formamidinium tetrafluorosuccinate (FATFSA) introduced into quasi-2D mixed halide accompanied by interface engineering, which effectively impedes formation undesired phases various bandgaps throughout entire film, thereby boosting transfer process for accelerating radiative recombination; this also diminishes vacancies especially chloride-related deep level, reducing nonradiative loss recombination. Benefitting from homogenized landscape emitting layer, PeLEDs spectrally-stable emission (478 nm) champion external quantum (EQE) 21.9% are realized, represents a record value among in pure region.

Language: Английский

Citations

6