scholarly journals Highly Efficient Double-Layer Diffraction Microstructures Based on New Plastics and Molded Glasses

Photonics ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 327
Author(s):  
Grigoriy I. Greisukh ◽  
Viktor A. Danilov ◽  
Evgeniy G. Ezhov ◽  
Sergey V. Kazin ◽  
Boris A. Usievich
Keyword(s):  
Double Layer ◽  
Diffraction Efficiency ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Optical Materials ◽  
Diffraction Theory ◽  
Spatial Period ◽  
Wide Range ◽  
Effective Depth ◽  
Relief Phase

Within the framework of rigorous diffraction theory, the maximum possible incidence angles of radiation on two-layer sawtooth relief-phase microstructures in the visible (0.4 ≤ λ ≤ 0.7 μm) spectral range are compared. Optical materials for the layers of these microstructures are selected from a database of 47 plastics and 165 molded glasses. It is shown that when the ratio of the spatial period of the microstructure to the effective depth of the relief is greater than 20, the achievable angles within which the diffraction efficiency exceeds 0.95 lie in a wide range from 18.5° to 40.5° for single-relief structures and 7.5° to 22.3° for structures with two internal reliefs. The best results for purely plastic microstructures are obtained when the plastic CMT and the indium tin oxide nanocomposite in polymethylmethacrylate are used.

scholarly journals Reference-Electrode Free pH Sensing Using Impedance Spectroscopy

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 742 ◽  
Author(s):  
Laura Folkertsma ◽  
Lennart Gehrenkemper ◽  
Jan Eijkel ◽  
Karin Gerritsen ◽  
Mathieu Odijk
Keyword(s):  
Impedance Spectroscopy ◽  
Double Layer ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Reference Electrode ◽  
Ph Sensing ◽  
Low Frequencies ◽  
High Frequencies ◽  
Double Layer Capacity ◽  
Proof Of Principle

We present a reference-electrode free sensor able to measure both pH and conductivitybased on impedance spectroscopy. The electrode is made of a layer of indium-tin-oxide (ITO). Theimpedance of this electrode at low frequencies depends on its double layer capacity, which varieswith pH due to modification of oxide groups at the ITO surface. At high frequencies, the impedanceis determined by the resistance in the system, which corresponds to the inverse conductivity of thesolution. Because no reference electrode is needed for this technique, miniaturization of the pHsensor is simple. We demonstrate a proof-of-principle experiment of the sensor for human plasmapH measurements.

Study of 2,6-Linked Quinquepyridine Derivative as Luminescence Materials

2000 ◽  
Vol 660 ◽  
Author(s):  
Y.J. Fu ◽  
T.K.S. Wong ◽  
G.M. Wang ◽  
X. Hu ◽  
S. Buddhudu ◽  
...  
Keyword(s):  
Solid State ◽  
Double Layer ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Single Layer ◽  
Charge Balance ◽  
Pl Spectra ◽  
Hole Transporting ◽  
Two Peaks

ABSTRACTBoth photoluminescence (PL) and electroluminescence (EL) properties of 6,6””-dimethyl-4', 4”'-diphenyl-2,2':6',2”:6”,2”':6”',2””-quinquepyridine (DMDPQPY), a 2,6-linked oligopy- ridine derivative, have been investigated. Two maxima are observed from its PL spectra in solid state, but only one peak appears in its PL in solutions. Emission from the single layer device with indium-tin-oxide (ITO) and Al as the respective anode and cathode (ITO/DMDPQPY/Al) is very weak, but introduction of a hole transporting layer polyvinylcarbazole (PVK), in the double layer device (ITO/PVK/DMDPQPY/Al), increases the luminance significantly indicating a better charge balance. Two peaks appear in the EL spectra, one at 419 nm and another at 536 nm, ascribed to PVK and DMDPQPY respectively.

Study of Double Layer Indium Tin Oxide in Silicon Hetero-Junction Solar Cells

2020 ◽  
Vol 20 (1) ◽  
pp. 161-167
Author(s):  
Ah Reum Lee ◽  
Doo Won Lee ◽  
Sang Hee Lee ◽  
Muhammad Fahad Bhopal ◽  
Han Jun Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Double Layer ◽  
Tin Oxide ◽  
Indium Tin Oxide

The Relation between the Electrical, Chemical, and Morphological Properties of Indium−Tin Oxide Layers and Double-Layer Light-Emitting Diode Performance

2007 ◽  
Vol 111 (46) ◽  
pp. 17404-17408 ◽  
Author(s):  
Paolo Vacca ◽  
Mario Petrosino ◽  
Alfredo Guerra ◽  
Rosa Chierchia ◽  
Carla Minarini ◽  
...  
Keyword(s):  
Double Layer ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Light Emitting Diode ◽  
Morphological Properties ◽  
Oxide Layers ◽  
Light Emitting

Activity Dependent Synaptic Plasticity Mimicked on Indium–Tin–Oxide Electric-Double-Layer Transistor

2017 ◽  
Vol 9 (42) ◽  
pp. 37064-37069 ◽  
Author(s):  
Juan Wen ◽  
Li Qiang Zhu ◽  
Yang Ming Fu ◽  
Hui Xiao ◽  
Li Qiang Guo ◽  
...  
Keyword(s):  
Synaptic Plasticity ◽  
Double Layer ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Electric Double Layer ◽  
Activity Dependent
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