Results 91 to 100 of about 537,589 (297)

High‐Efficiency Deep Blue Single‐Gaussian Europium(II) Emitters and Their Emitter‐Host Interactions

Advanced Functional Materials, EarlyView.
Crown‐ether ligands and carborate anions enable vacuum‐processable Eu(II) emitters with efficient single‐Gaussian deep‐blue luminescence. Combined photophysical and computational analyses reveal that excited‐electron confinement and steric shielding of the europium center jointly govern compatibility with OLED host materials, establishing molecular ...
Mahmoud Soleimani, Paulius Imbrasas, Jan‐Michael Mewes, Felix Kaden, Stephanie Anna Buchholtz, Karl Leo, Sebastian Schellhammer, Carsten Rothe, Sebastian Reineke   +8 more
wiley   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source

Design and fabrication of highly efficient non-linear optical devices for implementing high-speed optical processing [PDF]

, 2002
We present the design and fabrication of micro-cavity semiconductor devices for enhanced Two-Photon-Absorption response, and demonstrate the use of these devices for implementing sensitive autocorrelation measurements on pico-second optical ...
Folliot, H., Barry, Liam P., Krug, T., Lynch, Michael, Donegan, John Francis, Hill, G., Roberts, J.S., Bradley, Ann Louise   +7 more
core   +1 more source

Oligoethylene Glycol Side‐Chain Engineering of Y6‐Derived Nonfullerene Acceptors for Thermally Induced Spontaneous Pseudo‐Planar Heterojunction Organic Photodetectors

Advanced Functional Materials, EarlyView.
OEG‐functionalized Y6‐derived acceptors induce thermally driven vertical phase separation, enabling pseudo‐planar heterojunction organic photodetectors. The resulting PM6:YTEG‐4F and PM6:YTEG‐4Cl organic photodetectors suppress dark current density by approximately 260‐fold and 210‐fold, respectively, while maintaining efficient photoresponse ...
Se Jeong Park, Sang Young Jeong, Yunji Eom, Yelim Kang, Yeonsu Choi, Seunghyun Rhee, Bo Ram Lee, Bong Joo Kang, Nam Joong Jeon, Jae Won Shim, Han Young Woo, Seo‐Jin Ko   +11 more
wiley   +1 more source

Advances in entangled-photon sources and single-photon avalanche diodes for quantum technologies in the SWIR

Quantum sensing and quantum communication systems rely on high-performance single- or entangled-photon sources and single-photon detectors enabling experiments based on the quantum nature of single photons.
Müller, Raphael, Rehm, Robert, Passow, Thorsten, Rutz, Frank, Diwo-Emmer, Elke, Bächle, Andreas, Daumer, Volker, Wörl, Andreas, Niemasz, Jasmin, Yang, Quankui, Giudicatti, Silvia, Leidel, Vivienne   +11 more
core   +1 more source

Covalent Functionalization of 2D Semiconductors: A Roadmap to Advanced Electronic Devices

Advanced Functional Materials, EarlyView.
This Review presents recent advances in the covalent functionalization strategies for two‐dimensional semiconductors and their implementation in modern technologies. Layered materials are modified through diverse molecular chemistries (e.g., thiols, diazonium salts, alkyl halides, and electron‐deficient species) to tailor their surface properties ...
Ramiro Quirós‐Ovies, Bin Han, Paolo Samorì   +2 more
wiley   +1 more source

Timing properties of superconducting nanowire single-photon detectors

, 2019
In this paper, we review theoretical and experimental research progress on timing properties of superconducting nanowire single-photon detectors, including six possible mechanisms that induce timing jitter and experiments towards ultra-low timing jitter.
Yun Meng, Kai Zou, Zichi, Julien,, Valery Zwiller, Haiyi Liu, Lan, Xiaojian,, Liang Xu, Hao Wu, Nan Hu, Wu, Hao,, Julien Zichi, Chao Gu, Zwiller, Valery,, Meng, Yun,, Xiaoming Chi, Hu, Xiaolong,, Gu, Chao,, Xu, Liang,, Xiaolong Hu, Xiaojian Lan, Zou, Kai,, Yuhao Cheng, Liu, Haiyi,, Hu, Nan,, Chi, Xiaoming,, Cheng, Yuhao,   +25 more
core   +1 more source

Photon Counting OTDR: Advantages and Limitations

Journal of Lightwave Technology, 2010
We give detailed insight into photon counting OTDR (nu-OTDR) operation, ranging from Geiger mode operation of avalanche photodiodes (APD), analysis of different APD bias schemes, to the discussion of OTDR perspectives. Our results demonstrate that an InGaAs/InP APD based nu-OTDR has the potential of outperforming the dynamic range of a conventional ...
Eraerds, Patrick, Legre, Matthieu, Zhang, Jun, Zbinden, Hugo, Gisin, Nicolas   +4 more
openaire   +3 more sources

Hopping‐Mediated Zero‐Bias Photocharge Retention in Solution‐Processed Van Der Waals Heterostructures

Advanced Functional Materials, EarlyView.
Liquid–liquid interface assembly enables the fabrication of solution‐processed MoS2 and WSe2 centimeter‐scale, nanometer‐thick type‐II heterostructures on paper. Interfacial charge separation and hopping‐limited recombination produce rectification and persistent photocharge retention at zero bias.
Aniello Pelella, Andrea Sessa, Yi‐Chen Tsai, Xuzhao Liu, Abdul Mannan, George Greaves, Yahya Saboon, Ben Spencer, Antonio Di Bartolomeo, Cinzia Casiraghi, Jessica Boland, Alessandro Grillo   +11 more
wiley   +1 more source

Time-resolved fast-neutron imaging with a pulse-counting image intensifier [PDF]

, 2006
A new imaging method that combines high-efficiency fast-neutron detection with sub-ns time resolution is presented. This is achieved by exploiting the high neutron detection efficiency of a thick scintillator and the fast timing capability and ...
Barnstedt, Juergen, Breskin, Amos, Jagutzki, Ottmar, Ronald Lauck, Michael Kraemer, Ottmar Jagutzki, Dangendorf, Volker, Juergen Barnstedt, David Vartsky, Vartsky, David, Lauck, Ronald, Kraemer, Michael, Kaufmann, Frank, Frank Kaufmann, Volker Dangendorf, Amos Breskin   +15 more
core