Fabrication of large area ultrathin silicon membrane: Application for high efficiency extreme ultraviolet diffraction gratings

2010 ◽  
Vol 28 (1) ◽  
pp. 194-197 ◽  
Author(s):  
C. Constancias ◽  
B. Dalzotto ◽  
P. Michallon ◽  
J. Wallace ◽  
M. Saib
Keyword(s):  
High Efficiency ◽  
Extreme Ultraviolet ◽  
Diffraction Gratings ◽  
Silicon Membrane ◽  
Large Area

Combined Microstructure X-Ray Optics; Multilayer Diffraction Gratings

1987 ◽  
Vol 103 ◽  
Author(s):  
Troy W. Barbee
Keyword(s):  
High Efficiency ◽  
Extreme Ultraviolet ◽  
Diffraction Gratings ◽  
Experimental Results ◽  
Optical Elements ◽  
Ray Optics ◽  
X Ray ◽  
Spectral Ranges

ABSTRACTMultilayers are man-made microstructures engineered to vary in depth that are now of sufficient quality to be used as x-ray, soft x-ray and extreme ultraviolet optics. Gratings are in-plane man-made microstructures which have been used as optic elements for most of this century. Joining of these two optical elements to form combined microstructure optics has the potential for greatly enhancing both the resolution and the throughput attainable in these spectral ranges. Experimental results for multilayer gratings are presented and discussed. It will be demonstrated that multilayer diffraction gratings act as x-ray prisms and are high efficiency dispersion elements.

HIGH EFFICIENCY, LARGE-AREA PHOTOVOLTAIC DEVICES USING AMORPHOUS Si : F : H ALLOY

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-463-C4-466
Author(s):  
A. Madan ◽  
W. Czubatyj ◽  
J. Yang ◽  
J. McGill ◽  
S. R. Ovshinsky
Keyword(s):  
High Efficiency ◽  
Photovoltaic Devices ◽  
Large Area ◽  
Amorphous Si

scholarly journals Efficient and large-area all vacuum-deposited perovskite light-emitting diodes via spatial confinement

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Peipei Du ◽  
Jinghui Li ◽  
Liang Wang ◽  
Liang Sun ◽  
Xi Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Large Scale ◽  
High Efficiency ◽  
Light Emitting Diodes ◽  
Scale Production ◽  
Nonradiative Recombination ◽  
Large Area ◽  
Spatial Confinement ◽  
Light Emitting ◽  
Large Scale Production

AbstractWith rapid advances of perovskite light-emitting diodes (PeLEDs), the large-scale fabrication of patterned PeLEDs towards display panels is of increasing importance. However, most state-of-the-art PeLEDs are fabricated by solution-processed techniques, which are difficult to simultaneously achieve high-resolution pixels and large-scale production. To this end, we construct efficient CsPbBr3 PeLEDs employing a vacuum deposition technique, which has been demonstrated as the most successful route for commercial organic LED displays. By carefully controlling the strength of the spatial confinement in CsPbBr3 film, its radiative recombination is greatly enhanced while the nonradiative recombination is suppressed. As a result, the external quantum efficiency (EQE) of thermally evaporated PeLED reaches 8.0%, a record for vacuum processed PeLEDs. Benefitting from the excellent uniformity and scalability of the thermal evaporation, we demonstrate PeLED with a functional area up to 40.2 cm2 and a peak EQE of 7.1%, representing one of the most efficient large-area PeLEDs. We further achieve high-resolution patterned perovskite film with 100 μm pixels using fine metal masks, laying the foundation for potential display applications. We believe the strategy of confinement strength regulation in thermally evaporated perovskites provides an effective way to process high-efficiency and large-area PeLEDs towards commercial display panels.

scholarly journals High-speed high-efficiency large-area resonant cavity enhanced p-i-n photodiodes for multimode fiber communications

2001 ◽  
Vol 13 (12) ◽  
pp. 1349-1351 ◽  
Author(s):  
M. Gokkavas ◽  
O. Dosunmu ◽  
M.S. Unlu ◽  
G. Ulu ◽  
R.P. Mirin ◽  
...  
Keyword(s):  
High Speed ◽  
High Efficiency ◽  
Resonant Cavity ◽  
Multimode Fiber ◽  
Large Area ◽  
Fiber Communications

scholarly journals Advanced Multilayer Composite Heavy-Oxide Scintillator Detectors for High Efficiency Fast Neutron Detection

2018 ◽  
Vol 170 ◽  
pp. 07010 ◽  
Author(s):  
Vladimir D. Ryzhikov ◽  
Sergei V. Naydenov ◽  
Thierry Pochet ◽  
Gennadiy M. Onyshchenko ◽  
Leonid A. Piven ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Count Rate ◽  
High Efficiency ◽  
Low Cost ◽  
Neutron Detection ◽  
Multilayer Composite ◽  
Large Area ◽  
Transparent Plastic ◽  
Fast Neutron Detection ◽  
Scintillator Detectors

We have developed and evaluated a new approach to fast neutron and neutron-gamma detection based on large-area multilayer composite heterogeneous detection media consisting of dispersed granules of small-crystalline scintillators contained in a transparent organic (plastic) matrix. Layers of the composite material are alternated with layers of transparent plastic scintillator material serving as light guides. The resulting detection medium – designated as ZEBRA – serves as both an active neutron converter and a detection scintillator which is designed to detect both neutrons and gamma-quanta. The composite layers of the ZEBRA detector consist of small heavy-oxide scintillators in the form of granules of crystalline BGO, GSO, ZWO, PWO and other materials. We have produced and tested the ZEBRA detector of sizes 100x100x41 mm and greater, and determined that they have very high efficiency of fast neutron detection (up to 49% or greater), comparable to that which can be achieved by large sized heavy-oxide single crystals of about Ø40x80 cm3 volume. We have also studied the sensitivity variation to fast neutron detection by using different types of multilayer ZEBRA detectors of 100 cm2 surface area and 41 mm thickness (with a detector weight of about 1 kg) and found it to be comparable to the sensitivity of a 3He-detector representing a total cross-section of about 2000 cm2 (with a weight of detector, including its plastic moderator, of about 120 kg). The measured count rate in response to a fast neutron source of 252Cf at 2 m for the ZEBRA-GSO detector of size 100x100x41 mm3 was 2.84 cps/ng, and this count rate can be doubled by increasing the detector height (and area) up to 200x100 mm2. In summary, the ZEBRA detectors represent a new type of high efficiency and low cost solid-state neutron detector that can be used for stationary neutron/gamma portals. They may represent an interesting alternative to expensive, bulky gas counters based on 3He or 10B neutron detection technologies.

Improving Contact and Passivation of Buried Interface for High‐Efficiency and Large‐Area Inverted Perovskite Solar Cells

2021 ◽  
pp. 2109968
Author(s):  
Xiaojia Xu ◽  
Xiaoyu Ji ◽  
Rui Chen ◽  
Fangyuan Ye ◽  
Shuaijun Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Efficiency ◽  
Perovskite Solar Cells ◽  
Large Area

High Efficiency High Stable Large Area Perovskite Solar Module Including 2D Strategy and Polymeric Hole Transport Material

2021 ◽  
Author(s):  
Narges Yaghoobi Nia ◽  
Mahmoud Zendehdel ◽  
Barbara Paci ◽  
Amanda Generosi ◽  
Zhaoxiang Zheng ◽  
...  
Keyword(s):  
High Efficiency ◽  
Hole Transport ◽  
Large Area ◽  
Solar Module
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