Results 111 to 120 of about 134,154 (310)

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

Advanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti, Carla Boix‐Constant, Iván Gómez‐Muñoz, Diego López‐Alcalá, Sergio Revuelta, Marco Ballabio, Vasileios Balos, José J. Baldoví, Enrique Cánovas, Josep Canet‐Ferrer, Guillermo Mínguez Espallargas, Samuel Mañas‐Valero, Eugenio Coronado   +12 more
wiley   +1 more source

Photoluminescence and photostimulated luminescence of BaFBr:Eu2+,Eu3+

, 1997
In the photoluminescence (PL) of BaFBr:Eu2+,Eu3+, the emissions of Ea(2+), carrier electron-hole (e-h) recombination, and Eu3+ are observed, while in the photostimulated luminescence (PSL) only the emission of Eu2+ is exhibited. This disappearance of e-h
Chen W, Chen W CHINESE ACAD SCIINST SEMICONDLAB SEMICOND MAT SCIBEIJING 100083PEOPLES R CHINA., Su MZ   +2 more
core  

Applying time-resolved photoluminescence in scanning near-field optical microscopy to map charge-carrier dynamics in CsPbBr3 nanocrystals

Charge-carrier dynamics in perovskite materials are commonly investigated using techniques that either provide spatially averaged information or probe only a single point, often overlooking nanoscale heterogeneities that critically influence device ...
Kratochvíl, Matouš, Čecháček, Jan, Bouchal, Petr, Křápek, Vlastimil, Nováček, Zdeněk, Spousta, Jiří, Ulč, Filip, Klok, Pavel, Viewegh, Petr, Šamořil, Tomáš, Liška, Petr, Šikola, Tomáš, Černek, Ondrej   +12 more
core   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

Advanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

High temperature photoluminescence sensitivity of Te4+ in silver nanoparticle tellurite glasses: Application as optical temperature sensor

Next Materials
Tellurite glasses with the composition (in mol%) (100-x)(75TeO2:25Li2O):xAgNO3 (x = 0, 0.6, and 1.2) were synthesized at 800 °C in an ambient atmosphere, for investigation of the influence of Ag nanoparticles on the Te4+ semi metal ion photoluminescence (
Adriana do Carmo Capiotto, Luis Humberto da Cunha Andrade, Junior Reis Silva, Luiz Antonio de Oliveira Nunes, Sandro Marcio Lima   +4 more
doaj   +1 more source

Lattice‐Matched 2D Template Enables Efficient Cesium Tin Halide Perovskite Solar Cells

Advanced Materials, EarlyView.
Lattice‐matched 2D perovskite PEA2CsSn2I7 templates the out‐of‐plane growth of inorganic 3D γ‐CsSnI3 along the (110) plane, forming highly oriented 2D/3D tin halide perovskite heterostructures. With reduced trap states and mitigated δ‐phase impurities, the CsSnI3‐based solar cells achieve a power conversion efficiency of 15.27% and maintain stable ...
Hongzhe Anna Xu, Dongxu He, Wencai Zhou, Julian A. Steele, Zhiliang Wang, Zitong Wang, Chengxi Zhang, Shanshan Ding, Bowei Zhang, Huiyuan Cheng, Mengmeng Hao, Jiangyu Hang, Can Zheng, Zilong Zheng, Peng Chen, Lianzhou Wang   +15 more
wiley   +1 more source

Problems Related to Photoluminescence of Si Nanocrystals

It is a widely accepted opinion that the intense photoluminescence (PL) of Si nanocrystals (Si-flc) is caused by radiative recombination. Our analyses of available theoretical and experimental data show that Si-nc has an indirect band structure and ...
Purītis, Tālivaldis, Kaupuzs, Jevgenijs   +1 more
core  

Photoluminescence of ZnO : Tb nanoparticles

, 2000
Terbium-doped zinc oxide nanoparticles have been prepared by hydrolyzing zinc acetate and terbium acetate. Nanoparticle-matrix-facilitated photoluminescence which is related to Tb3+ ions has been observed for ZnO:Tb nanoparticles.
Guo HQ, Zhang ZH, Liu SM,Chinese Acad Sci,Inst Semicond,Lab Semicond Mat Sci,Beijing 100083,Peoples R China., Wang ZG, Liu FQ, Liu SM   +5 more
core  

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Study of Predicting the Performance of I-V Curves Through Photoluminescence Spectral Characteristics

IEEE Photonics Journal
Quality of GaN LEDs is closely related to the defects in quantum wells. Effectively evaluating the performance of LEDs is a key step in mass production. Electrical characterization testing is very effective for characterizing the performance of LEDs, and
Zhikun Hong, Junqiang Sun, Tianchi Bao, Yanan Zeng   +3 more
doaj   +1 more source