Results 171 to 180 of about 2,881,061 (366)

Quantifying Spin Defect Density in hBN via Raman and Photoluminescence Analysis

Advanced Functional Materials, EarlyView.
An all‐optical method is presented for quantifying the density of boron vacancy spin defects in hexagonal boron nitride (hBN). By correlating Raman and photoluminescence signals with irradiation fluence, defect‐induced Raman modes are identified and established an relationship linking optical signatures to absolute defect densities. This enables direct
Atanu Patra, Paul Konrad, Andreas Sperlich, Timur Biktagirov, Wolf Gero Schmidt, Lesley Spencer, Igor Aharonovich, Sven Höfling, Vladimir Dyakonov   +8 more
wiley   +1 more source

Exploring the feedback limits of quantum dot lasers for isolator-free photonic integrated circuits

Light: Science & Applications
Reflections from on-chip components pose significant challenges to stable laser operation in photonic integrated circuits (PICs). Quantum dot (QD) lasers, with low linewidth enhancement factors and high damping rates, are promising for isolator-free ...
Ying Shi, Bozhang Dong, Xiangpeng Ou, Artem Prokoshin, Chen Shang, John E. Bowers, Yating Wan   +6 more
doaj   +1 more source

High‐Rate FA‐Based Co‐Evaporated Perovskites: Understanding Rate Limitations and Practical Considerations to Overcome Their Impact

Advanced Functional Materials, EarlyView.
Vacuum‐based deposition is promising for perovskite solar cells to be successfully commercialized. However, co‐evaporation, the most common vapor phase deposition technique, suffers from very low deposition rates. In this work, we reveal that high deposition rates can lead to carbon flakes depositing into the perovskite absorber layers due to material ...
Thomas Feeney, Aleksandra Miaskiewicz, Julian Petry, Felix Laufer, Roja Singh, Stefanie Severin, Viktor Škorjanc, Alexander Diercks, Suresh Maniyarasu, Lars Korte, Steve Albrecht, Ulrich W. Paetzold, Marcel Roß, Paul Fassl   +13 more
wiley   +1 more source

Unveiling Aggregation‐Induced Singlet Fission in Push–Pull Diketopyrrolopyrrole Water Dispersed Nanoaggregates and Thin Films

Advanced Functional Materials, EarlyView.
Aggregates of diketopyrrolopyrrole dipolar and quadrupolar systems exhibit panchromatic absorption spectra extending in the entire visible range. Upon aggregation in water and in the solid state, their fluorescence is almost completely quenched and their singlet excited state lifetime is significantly shortened.
Roberto Cantoni, Martina Alebardi, Eliana Maria D'Amato, Charu Popli, Yuvraj Patil, Pietro Mancini, Alessandro Di Michele, Anna Spalletti, Rajneesh Misra, Theodore Goodson, Benedetta Carlotti   +10 more
wiley   +1 more source

Integrated photonics approach to radio-frequency self-interference cancellation

, 2022
Awanish Pandey, Kasper Van Gasse, Dries Van Thourhout   +2 more
openalex   +1 more source

Present and future of terahertz integrated photonic devices [PDF]

, 2023
Shima Rajabali, Ileana-Cristina Benea-Chelmus   +1 more
openalex   +1 more source

Thermoplasmonic Nanorings for Passive Solar‐Responsive Smart Windows in Energy‐Efficient Building Applications

Advanced Functional Materials, EarlyView.
This work presents scalable silver nanorings with tunable thermoplasmonic properties for smart window applications. By responding to sunlight and environmental changes, the nanorings modulate near‐infrared light and reduce heat transmission. Their unique geometry enables dynamic optical control, offering a promising route toward energy‐efficient ...
Xavier Baami González, Duncan S. Sutherland   +1 more
wiley   +1 more source

Cantilever couplers for intra-chip coupling to silicon photonic integrated circuits

, 2009
Peng Sun, Ronald M. Reano
openalex   +1 more source

Solvent‐Free Bonding Mechanisms and Microstructure Engineering in Dry Electrode Technology for Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
Dry electrode technology revolutionizes battery manufacturing by eliminating toxic solvents and energy‐intensive drying. This work details two promising techniques: dry spray deposition and polymer fibrillation. How their unique solvent‐free bonding mechanisms create uniform microstructures for thicker, denser electrodes, boosting energy density and ...
Yuhao Liang, Hao Long, Zimo Huang, Ting He, Xueming Chen, Meng Li, Hao Chen, Shanqing Zhang   +7 more
wiley   +1 more source

Packaging Considerations and Evaluation Techniques for Integrated Liquid-Crystal-Based Modulators

IEEE Photonics Journal
In this work, we discuss fabrication processes, important considerations, and evaluation techniques for successful packaging of liquid crystal (LC) into silicon-photonics platforms to enable compact and power-efficient integrated LC-based modulators ...
Andres Garcia Coleto, Milica Notaros, Jelena Notaros   +2 more
doaj   +1 more source