Impurity Bands in Group-IV Semiconductors

Eto, Mikio; Kamimura, Hiroshi

doi:10.1016/b978-0-44-453153-7.00049-3

Cited by 3 publications

(1 citation statement)

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“…The initial luminescence intensity of the phosphor was that decreased to about 100 mcd afterward marginally decreased showing bright phosphorescence for more than mcd.m -2 . [17,[24][25][26]. This effect is explained by the fact that the wave functions of the electrons bound to the impurity atoms start to overlap as the density of the impurities increase instance at a doping concentration of 0.01 mol % ( 10 18 cm -3 ), the average distance between two impurities is only 10 nm.…”

Section: +mentioning

confidence: 99%

Design of Long Persistent White Phosphorescence in a Composite Phosphor Via Energy Transfer Mechanism

Luitel¹,

Chand²,

Torikai

et al. 2015

IJMSA

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Abstract:A high quality composite phosphor powder of warm to cool white emission and long afterglow phosphorescence was reported by the process of energy transfer in a composite phosphor. The composite phosphor particles include at least two types of phosphor particles viz. a blue white persistent component and yellow fluorescent component. The blue white extremely long persistent component transfers its afterglow to the yellow fluorescent component in the composite phosphor followed by the color mixing process to generate the white afterglow. The composite phosphor is designed in such a way that the excitation spectrum of the fluorescent component was overlapped as much with the afterglow emission of the persistent component. The composite phosphor emission spectrum can be well tuned from warm to cool white depending on the proportions of the composite phosphors and energy transfer extent. Phosphor includes powders, ceramics and resin composites.

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Section: +mentioning

confidence: 99%

Design of Long Persistent White Phosphorescence in a Composite Phosphor Via Energy Transfer Mechanism

Luitel¹,

Chand²,

Torikai

et al. 2015

IJMSA

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Marine Waste Heat Recovery System

Fuente

2017

Encyclopedia of Maritime and Offshore Engineering

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The usage of wasted energy in human‐made processes to reduce the need of more energy coming from raw materials has been recorded since the Industrial Revolution. Shipping, being the most energy‐efficient means of transportation, commonly uses waste heat recovery systems on board to further increase its operative efficiency. Waste heat is used to produce steam or electricity which is consumed on board. As main engines' thermal efficiencies start to plateau because they are close to the theoretical maximum efficiencies and as emission regulation becomes more stringent, it is important to look for alternative usages, processes, and designs of waste heat recovery systems.The purpose of this article is to give the reader a broad idea of how the energy on board a ship can be reutilized in order to increase the ship's fuel consumption, hence reducing the emission of noxious gases (e.g., CO2and NOx) into the environment. Also, it explores traditional and alterative waste heat recovery processes, usages, and systems, which are installed on board nowadays or could be in the near future. This work focuses mainly on the use of the ship's prime mover waste heat, but this does not mean that the technologies and approaches described in this article cannot be applied to other systems such as auxiliary engines or electrical generators on board.This article starts with the history of waste recovery systems and then moves for a brief description of different marine CO2‐mitigating strategies and where the available waste heat can be found on board. It then covers what a thermal machine is and how it can be used to produce heating, cooling, and mechanical and electrical power through different thermodynamic and electrical processes. Finally, it concludes that traditional and alternative waste heat recovery systems installed on board are important players in achieving more efficient shipping.

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Structure and electrical transport properties of carbon nanofibres/carbon nanotubes 3D hierarchical nanocomposites: Impact of the concentration of acetylacetonate catalyst

Zambrzycki

Łoś

2021

Ceramics International

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Impurity Bands in Group-IV Semiconductors

Cited by 3 publications

References 119 publications

Design of Long Persistent White Phosphorescence in a Composite Phosphor Via Energy Transfer Mechanism

Design of Long Persistent White Phosphorescence in a Composite Phosphor Via Energy Transfer Mechanism

Marine Waste Heat Recovery System

Structure and electrical transport properties of carbon nanofibres/carbon nanotubes 3D hierarchical nanocomposites: Impact of the concentration of acetylacetonate catalyst

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