Specification for capability approval of light emitting and infra-red diode arrays of assessed quality: generic data and methods of test

1983 ◽  
Keyword(s):  
Light Emitting ◽  
Generic Data ◽  
Infra Red

Light Emission from Intrinsic and Doped Silicon-Rich Silicon Oxide: from the Visible to 1.6 ΜM

1996 ◽  
Vol 452 ◽  
Author(s):  
L. Tsybeskov ◽  
K. L. Moore ◽  
P. M. Fauchet ◽  
D. G. Hall
Keyword(s):  
Rare Earth ◽  
External Quantum Efficiency ◽  
Room Temperature ◽  
Structural Modification ◽  
Silicon Oxide ◽  
Light Emission ◽  
Crystalline Silicon ◽  
Light Emitting ◽  
Infra Red ◽  
Doped Silicon

AbstractSilicon-rich silicon oxide (SRSO) films were prepared by thermal oxidation (700°C-950°C) of electrochemically etched crystalline silicon (c-Si). The annealing-oxidation conditions are responsible for the chemical and structural modification of SRSO as well as for the intrinsic light-emission in the visible and near infra-red spectral regions (2.0–1.8 eV, 1.6 eV and 1.1 eV). The extrinsic photoluminescence (PL) is produced by doping (via electroplating or ion implantation) with rare-earth (R-E) ions (Nd at 1.06 μm, Er at 1.5 μm) and chalcogens (S at ∼1.6 μm). The impurities can be localized within the Si grains (S), in the SiO matrix (Nd, Er) or at the Si-SiO interface (Er). The Er-related PL in SRSO was studied in detail: the maximum PL external quantum efficiency (EQE) of 0.01–0.1% was found in samples annealed at 900°C in diluted oxygen (∼ 10% in N2). The integrated PL temperature dependence is weak from 12K to 300K. Light emitting diodes (LEDs) with an active layer made of an intrinsic and doped SRSO are manufactured and studied: room temperature electroluminescence (EL) from the visible to 1.6 μmhas been demonstrated.

Dual functions of a novel low-gap polymer for near infra-red photovoltaics and light-emitting diodes

2011 ◽  
Vol 47 (31) ◽  
pp. 8820 ◽  
Author(s):  
Penglei Li ◽  
Oliver Fenwick ◽  
Seyfullah Yilmaz ◽  
Dietrich Breusov ◽  
Daren J. Caruana ◽  
...  
Keyword(s):  
Light Emitting Diodes ◽  
Light Emitting ◽  
Infra Red ◽  
Dual Functions

Ytterbium β-diketonate complexes for near infra-red organic light-emitting devices

2016 ◽  
Vol 620 ◽  
pp. 34-42 ◽  
Author(s):  
Zubair Ahmed ◽  
Rian E. Aderne ◽  
Jiang Kai ◽  
Helmut I.P. Chavarria ◽  
Marco Cremona
Keyword(s):  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Infra Red ◽  
Organic Light Emitting Devices

Mid-infra-red InGaAs light-emitting diodes for optical gas sensing grown on lattice-mismatched substrates

1995 ◽  
Vol 31 (6) ◽  
pp. 502-503 ◽  
Author(s):  
B. Grietens ◽  
C. Van Hoof ◽  
G. Borghs ◽  
M.R. Murti
Keyword(s):  
Light Emitting Diodes ◽  
Gas Sensing ◽  
Light Emitting ◽  
Infra Red ◽  
Optical Gas Sensing

scholarly journals Atmega Microcontroller 2560 Based Safety System of Monitor Panel and Controller on a Small Excavator

2020 ◽  
Vol 11 (3) ◽  
pp. 367-374
Author(s):  
Randis Baharuddin ◽  
◽  
Taufik Hidayat
Keyword(s):  
Light Emitting Diode ◽  
Indicator System ◽  
Safety System ◽  
Light Emitting ◽  
Standard Testing ◽  
Study Results ◽  
Testing Tool ◽  
Infra Red ◽  
The Right

This study aimed to design and build an Atmega Microcontroller 2560 based safety system on a monitor panel and a controller on a small excavator. Atmega 2560 Microcontroller-based alarm technology is the right choice as a solution to prevent theft of monitor panels and controllers on small excavator units, using Passive Infra-Red (PIR) sensor number 1 in the cabin room, PIR sensor number 2 on the battery, and door switch that is between the cabin and the door, if there is theft in the cabin room, then the alarm will be active, if a theft occurs in the battery then the alarm will be active. The alarm indicator system uses a buzzer (horn) unit, and there is additional lighting in the cabin room with a 24V Light Emitting Diode (LED) lamp if the alarm is active. Using an alarm, the risk of losing the monitor panel and controller due to theft on the unit can be prevented. The study results showed that the tool could work appropriately according to the standard testing tool, PIR sensors number 1 and 2 could detect movement or radiation so that the alarm would be active for 15 seconds. The door switch was tested by looking at the alarm condition, if the cabin door were closed when it was in the locked position, the alarm would not be active, but if the door was locked and forcibly opened, then the alarm would be active continuously without stopping until the door was closed again.

scholarly journals Design and Analysis of 24 Hours Solar Panel

2018 ◽  
Vol 225 ◽  
pp. 06006
Author(s):  
John Francis ◽  
Denie Sam Jawahar ◽  
Antony John Paul ◽  
M Lydia
Keyword(s):  
Economic Analysis ◽  
Mobile Communications ◽  
Light Emitting Diodes ◽  
Solar Panel ◽  
Night Time ◽  
Global System ◽  
Light Emitting ◽  
Major Disadvantage ◽  
Infra Red ◽  
Ir Light

The design of a 24/7 solar panel using artificial method of producing Infra-Red (IR) has been proposed in this paper. This arrangement ensures that the solar panel can produce energy even during night time. The major disadvantage of a solar panel is that it cannot be used during night time and when the panel is shaded. Our project aims to eliminate these disadvantages of solar panel. In this work, a Light Dependent Resistor (LDR) resistor is used to sense day or night conditions and the analog sensed value is sent to the PIC microcontroller. During night hours, only specified load will be on, so that the battery works without getting discharged fully even in the midnight. The IR Light Emitting Diodes (LEDs) that are used in night are placed in inner side of the shutter which is placed on top of the panel. The shutter is opened and closed using a motor which is controlled by using relay. The charge and discharge conditions of the battery are monitored by a Global System for Mobile Communications (GSM) module. The efficiency and economic analysis of the system has been presented.

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