Results 31 to 40 of about 375,113 (275)

Silicon Nitride Film by Inline PECVD for Black Silicon Solar Cells

open access: yesInternational Journal of Photoenergy, 2012
The passivation process is of significant importance to produce high-efficiency black silicon solar cell due to its unique microstructure. The black silicon has been produced by plasma immersion ion implantation (PIII) process.
Bangwu Liu   +4 more
doaj   +1 more source

Tailoring Femtosecond‐Laser Processed Black Silicon for Reduced Carrier Recombination Combined with >95% Above‐Bandgap Absorption

open access: yesAdvanced Photonics Research, 2022
The femtosecond‐pulsed laser processed black silicon (fs‐bSi) features high absorptance in a wide spectral range but suffers from high amount of laser induced damage as compared with bSi fabricated by other methods.
Xiaolong Liu   +5 more
doaj   +1 more source

Silicon nitride and silica quarter-wave stacks for low-thermal-noise mirror coatings [PDF]

open access: yes, 2018
This study investigates a multilayer high reflector with new coating materials for next-generation laser interferometer gravitational wave detectors operated at cryogenic temperatures.
Chang, Lin-An   +6 more
core   +1 more source

Control of valley dynamics in silicon quantum dots in the presence of an interface step [PDF]

open access: yes, 2016
Recent experiments on silicon nanostructures have seen breakthroughs toward scalable, long-lived quantum information processing. The valley degree of freedom plays a fundamental role in these devices, and the two lowest-energy electronic states of a ...
Boross, Péter   +3 more
core   +2 more sources

Broadband enhancement of light emission in silicon slot waveguides [PDF]

open access: yes, 2009
We investigate the light emission properties of electrical dipole emitters inside 2-dimensional (2D) and 3-dimensional (3D) silicon slot waveguides and evaluate the spontaneous emission enhancement (F_p) and waveguide coupling ratio (β).
Almeida   +24 more
core   +1 more source

Quasi-monolithic mirror suspensions in ground-based gravitational wave detectors [PDF]

open access: yes, 2018
At the commencement of a new era in astrophysics, with added information from direct detections of gravitational-wave (GW) signals, this paper is a testament to the quasi-monolithic suspensions of the test masses of the GW detectors that have enabled the
van Veggel, Anna-Maria
core   +1 more source

A theoretical study on the optical properties of black silicon

open access: yesAIP Advances, 2018
There is a wide application prospect in black silicon, especially in solar cells and photoelectric detectors. For further optimization of black silicon, it is important to study its optical properties.
Shijun Ma   +6 more
doaj   +1 more source

Optical properties and growth mechanism of rock-like structured black silicon

open access: yesMaterials Research Express, 2020
In this study, rock-like black silicon is prepared by using plasma enhanced hot-wire chemical vapor deposition (PE-HWCVD). The average grain sizes of polysilicon for 10-min, 20-min and 40-min growth time was about 12.4, 14.3 and 15.5 nm, respectively. As
Yu-Jen Hsiao, Yempati Nagarjuna
doaj   +1 more source

Exceptional and Anisotropic Transport Properties of Photocarriers in Black Phosphorus

open access: yes, 2015
We show that black phosphorus has room-temperature charge mobilities on the order of 10$^4$ cm$^2$V$^{-1}$s$^{-1}$, which are about one order of magnitude larger than silicon.
Bellus, Matthew Z.   +6 more
core   +2 more sources

The effects of material combination and surface roughness in lubricated silicon nitride/steel rolling contact fatigue [PDF]

open access: yes, 2003
Four kinds of commercially finished 12.7 min HIPed silicon nitride bearing balls with surface roughness values R-a ranging from 0.002 to 0.016 mum were tested using a four-ball rolling configuration.
Ahmed, R, Hadfield, M, Kang, J
core   +1 more source

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