Results 131 to 140 of about 67,781 (329)

Infrared Colloidal Quantum Dot Edge Emitting Lasers Integrated on Silicon

Advanced Optical Materials, EarlyView.
In this work, the first monolithic integration of Pb‐chalcogenide CQDs in an edge‐emitting DFB laser cavity onto a Si/SiO2 substrate has been demonstrated. The optimizations of SiO2 layer thickness, engineering of the grating duty cycle, and implementing λ/4 phase shift resulted in the achievement of spectrally pure, single‐mode lasing at 1650 nm with ...
Hamed Dehghanpour Baruj, Guy L. Whitworth, Nima Taghipour, Mariona Dalmases, Debranjan Mandal, Gerasimos Konstantatos   +5 more
wiley   +1 more source

Interlayer Exchange Coupling Mediated by Valence Band Electrons

, 2000
The interlayer exchange coupling mediated by valence band electrons in all-semiconductor IV-VI magnetic/nonmagnetic superlattices is studied theoretically.
A. Stachow-Wojcik, D. Chiba, G. Guentherodt, I.N. Goncharenko, J. Blinowski, J. Blinowski, J.A. Borchers, J.J. Rhyne, M. Wilczyński, N. Akiba, P. Bruno, P. Grünberg, P. Kacman, P. Shevchenko, P.J. Lin, S. Holl, S. Mathi Jaya, S.J. Cho, S.S.P. Parkin, Su-Huai Wei, T.M. Giebultowicz, T.M. Rusin, V. Nunez, V.K. Dugaev, W. A. Harrison   +24 more
core   +1 more source

Incorporating Si into Sb2Se3: Tailoring Optical Phase Change Materials via Nanocomposites

Advanced Optical Materials, EarlyView.
We study the structural, optical, and thermal effects of adding silicon to Sb2Se3 and demonstrate that the as‐deposited solid solution phase segregates after electro‐thermal switching, creating a nanocomposite with effective‐medium properties and a phase‐change response.
Chih‐Yu Lee, Yi‐Siou Huang, Felix Adams, Chuanyu Lian, Hongyi Sun, Jie Zhao, Zichao Ye, Nathan Youngblood, Juejun Hu, Leslie H Allen, Yifei Mo, Ichiro Takeuchi, Carlos A Ríos Ocampo   +12 more
wiley   +1 more source

High-energy exciton transitions in quasi-two-dimensional cadmium chalcogenide nanoplatelets

, 2017
Semiconductor nanoparticles of cadmium chalcogenides are known to exhibit pronounced thickness-dependent $E_0$ series of exciton transitions at the $\Gamma$ point of the Brillouin zone (BZ).
Lazareva, Elizabeth P., Lebedev, Alexander I., Sakoda, Kazuaki, Shlenskaya, Natalia N., Vasiliev, Roman B., Vitukhnovsky, Alexei G., Yao, Yuanzhao, Zaytsev, Vladimir B.   +7 more
core   +1 more source

Understanding the Structure and Properties of Sesqui‐Chalcogenides (i.e., V2VI3 or Pn2Ch3 (Pn = Pnictogen, Ch = Chalcogen) Compounds) from a Bonding Perspective

Advances in Materials, 2019
A number of sesqui‐chalcogenides show remarkable properties, which make them attractive for applications as thermoelectrics, topological insulators, and phase‐change materials.
Yudong Cheng, O. Cojocaru-Mirédin, Jens Keutgen, Yuan Yu, Michael Küpers, Mathias Schumacher, Pavlo Golub, J. Raty, R. Dronskowski, M. Wuttig   +9 more
semanticscholar   +1 more source

Multipolar Resonances in Electro‐Optic Metasurfaces with Moderate Refractive Index

Advanced Photonics Research, EarlyView.
Electro‐optic nanoantennas with moderate refractive indices of 2.3 to 3.0 are numerically shown to sustain strong multipolar resonances, enabling efficient light confinement and EO tuning. Multipolar modes of even parity are most sensitive to variations in the refractive index.
Viktoriia E. Babicheva, Mariacristina Rumi   +1 more
wiley   +1 more source

An Ultra‐Wideband Metasurface Perfect Absorber Based on Hybrid Absorption Modes

Advanced Photonics Research, EarlyView.
A Ge2Sb2Te5 metasurface absorber enables polarization‐independent, ultrabroadband (UV–NIR) light absorption with high angular tolerance. Its performance stems from overlapping electric and magnetic dipole resonances in a symmetric structure, achieving 94% average absorption and maintaining 83% even at 70° incidence, promising for integrated ...
Dingbang Liu, Yusa Chen, Yunhao Cao, Lijun Ma, Shuai Wang, HongShun Sun, Mingyao Gao, Dingyi Yang, Wengang Wu   +8 more
wiley   +1 more source

Computational Analysis of a GST‐Based Long‐Wave Infrared Microring Resonator on a ZnSe Platform as a Photonic Sensor

Advanced Photonics Research, EarlyView.
A Ge2Sb2Te5 (GST)‐based microring resonator is designed and simulated on a ZnSe‐platform that operates in the long‐wave infrared (LWIR) wavelength of 8 μm. The structure demonstrates strong power confinement and high Q‐factor. GST resonator is used for gas and biosensing applications.
Tanzina Rahman, Md. Islahur Rahman Ebon, Amrita Kumar Sana, Jaker Hossain   +3 more
wiley   +1 more source

Reconfigurable nanoionic and photoionic material and device platforms

Advances in Physics: X
Nanoionic and photoionic reconfigurable oxides and chalcogenide semiconductors are emerging material platforms for field-based, non-volatile control of electrons and photons in nanoscale optoelectronic device architectures.
Ahmed H. Elfarash, Behrad Gholipour
doaj   +1 more source

Synthesis and emerging properties of 2D layered III–VI metal chalcogenides

, 2019
Atomically thin layered III–VI metal chalcogenides are an emerging class of 2D materials that have attracted increasing attention in recent years due to their remarkable physical properties and technological applications. Thanks to the recently developed
H. Cai, Yiyi Gu, Yu‐Chuan Lin, Yiling Yu, D. Geohegan, Kai Xiao   +5 more
semanticscholar   +1 more source