Analysis of Low-Dark-Current, High-Sensitivity, Low-Optical-Crosstalk, and Small-Pixel-Size Pinned Photodiode With No-Gap Microlens

2010 ◽  
Vol 22 (21) ◽  
pp. 1556-1558 ◽  
Author(s):  
Xiangliang Jin ◽  
Jun Yang
Keyword(s):  
Dark Current ◽  
High Sensitivity ◽  
Pixel Size ◽  
Optical Crosstalk ◽  
Pinned Photodiode ◽  
Small Pixel

Ferroelectric Localized Field-Enhanced ZnO Nanosheet Ultraviolet Photodetector with High Sensitivity and Low Dark Current

Small ◽  
2018 ◽  
Vol 14 (22) ◽  
pp. 1800492 ◽  
Author(s):  
Peng Wang ◽  
Yang Wang ◽  
Lei Ye ◽  
Mingzai Wu ◽  
Runzhang Xie ◽  
...  
Keyword(s):  
Dark Current ◽  
High Sensitivity ◽  
Ultraviolet Photodetector

Toward a new lower limit for the minimum scattering vector on the very small angle neutron scattering spectrometer at Laboratoire Léon Brillouin

2008 ◽  
Vol 41 (1) ◽  
pp. 161-166 ◽  
Author(s):  
Annie Brûlet ◽  
Vincent Thévenot ◽  
Didier Lairez ◽  
Sébastien Lecommandoux ◽  
Willy Agut ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Pixel Size ◽  
Resolution Function ◽  
Incident Wavelength ◽  
Under Construction ◽  
Very High ◽  
Good Agreement ◽  
Small Pixel

The main characteristics of the very small angle neutron scattering spectrometer (VSANS) under construction at the Laboratoire Léon Brillouin are a multibeam pinhole collimator converging onto an image plate detector. By combining tiny collimation (diaphragms of around 1 or 2 mm in diameter) with the small pixel size of the detector (0.15 × 0.15 mm), very high resolution measurements can be achieved. The resolution function of the instrument contains a contribution from gravity, which is reduced by the intermediate masks of the collimator. Owing to the relatively short length of the VSANS instrument (around 14 m), this effect remains weak, in good agreement with the predictions. With a prototype multibeam collimator, an incident wavelength of 0.9 nm and the detector located at 6 m from the sample, it is possible to accessqvalues as low as 4 × 10−3 nm−1with very highqresolution. Promising preliminary experiments with highqresolution are reported, which open up new fields to the SANS technique.

A High Performance UV Photodetector from Thin Film Diamond

1995 ◽  
Vol 416 ◽  
Author(s):  
Robert D. Mckeag ◽  
Michael D. Whitfield ◽  
Simon Sm Chan ◽  
Lisa Ys Pang ◽  
Richard B. Jackman
Keyword(s):  
Thin Film ◽  
Visible Light ◽  
Quantum Efficiency ◽  
Dark Current ◽  
External Quantum Efficiency ◽  
High Performance ◽  
Uv Light ◽  
High Sensitivity ◽  
Uv Photodetector ◽  
Deep Uv

ABSTRACTThin film diamond has been used to fabricate a photodetector which displays high sensitivity to deep UV light, with an external quantum efficiency of greater than one, a dark current of less than 0.1nA and which is near ‘blind’ to visible light.

31.3: A New Type of Liquid Crystal Diffractive Light Valve with Very Small Pixel Size

2002 ◽  
Vol 33 (1) ◽  
pp. 962
Author(s):  
Bin Wang ◽  
Philip J. Bos ◽  
David B. Chung
Keyword(s):  
Liquid Crystal ◽  
Pixel Size ◽  
New Type ◽  
Light Valve ◽  
Small Pixel

scholarly journals A Complete Two-Dimensional Avalanche Photodiode Based on MoTe2−WS2−MoTe2 Heterojunctions With Ultralow Dark Current

2021 ◽  
Vol 8 ◽  
Author(s):  
Tenghui Ouyang ◽  
Ximiao Wang ◽  
Shaojing Liu ◽  
Huanjun Chen ◽  
Shaozhi Deng
Keyword(s):  
Dark Current ◽  
Near Infrared ◽  
Transition Metal Dichalcogenides ◽  
High Sensitivity ◽  
Avalanche Photodiode ◽  
Infrared Region ◽  
Low Noise ◽  
Two Dimensional ◽  
Device Structure ◽  
Avalanche Gain

Two-dimensional (2D)-material-based photodetectors have recently received great attention due to their potentials in developing ultrathin and highly compact devices. Avalanche photodiodes (APDs) are widely used in a variety of fields such as optical communications and bioimaging due to their fast responses and high sensitivities. However, conventional APDs based on bulk materials are limited by their relatively high dark current. One solution to tackle this issue is by employing nanomaterials and nanostructures as the active layers for APDs. In this study, we proposed and fabricated an atomically-thick APD based on heterojunctions formed by 2D transition metal dichalcogenides (TMDs). A typical device structure was formed by stacking a semiconducting monolayer WS2 onto two metallic few-layer MoTe2 flakes. Due to the Schottky barrier formed between the TMD layers and their atomic thicknesses, the dark current of the APD is greatly reduced down to 93 pA. In addition, the APD can operate through a broad spectral range from visible to near-infrared region, with a responsivity of 6.02 A/W, an external quantum efficiency of 1,406%, and an avalanche gain of 587. We believe that the 2D APD demonstrated here provides a feasible approach for developing all-2D optoelectronic devices with simultaneous high-sensitivity and low noise.

scholarly journals Metal Slot Color Filter Based on Thin Air Slots on Silver Block Array

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 912
Author(s):  
Youngsoo Kim ◽  
Kihwan Moon ◽  
Young Jin Lee ◽  
Seokhyeon Hong ◽  
Soon-Hong Kwon
Keyword(s):  
Incident Light ◽  
Color Filter ◽  
Transmission Spectra ◽  
Color Spaces ◽  
Pixel Size ◽  
Practical Applications ◽  
Display Devices ◽  
Silica Substrate ◽  
Substrate Structure ◽  
Small Pixel

The human eye perceives the color of visible light depending on the spectrum of the incident light. Hence, the ability of color expression is very important in display devices. For practical applications, the transmitted color filter requires high transmittance and vivid colors, covering full standard default color spaces (sRGB). In this paper, we propose a color filter with a silver block array on a silica substrate structure with nanoscale air slots where strong transmission is observed through the slots between silver blocks. We investigated the transmitted color by simulating the transmission spectra as functions of various structure parameters. The proposed structure with an extremely small pixel size of less than 300 nm covers 90% of sRGB color depending on the structure and has a narrow angular distribution of transmitted light.

X-ray analysis of fully depleted CCDs with small pixel size

2014 ◽  
Author(s):  
I. V. Kotov ◽  
J. Haupt ◽  
P. Kubánek ◽  
P. O'Connor ◽  
P. Takacs
Keyword(s):  
Pixel Size ◽  
Fully Depleted ◽  
X Ray ◽  
Small Pixel
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