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About 10,000 papers for “quantum efficiency”
2008
Citation: 'quantum efficiency' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.Q04988 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial usage of the compendium should be directed to IUPAC.
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Vikram Dhar · 2015
Quantum efficiency (QE) is a figure-of-merit of a photon detector. QE is equal to the percentage of incident photons that are converted by the detector into electrons that constitute a measurable signal. QE applies to detectors spanning a wavelength range from the far infrared (IR) to gamma rays because these are all photons. A detector's QE is affected by many variables: wavelength (of radiation), surface reflectance(s), absorption coefficient(s), layer thickness(es), frequency response, bulk and surface recombination, doping level(s), device configuration, etc.
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Dongqing Li · 2015
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Silvia E. Braslavsky, K. N. Houk · IUPAC Standards Online · 2016
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S. E. Braslavsky · IUPAC Standards Online · 2016
The second edition of the Glossary of Terms Used in Photochemistry [Pure Appl. Chem.68, 2223–2286 (1996); <http://www.iupac.org/publications/pac/1996/pdf/6812x2223.pdf>] has been both corrected and updated. Terms have been added related to molecular anisotropy, the use of polarized radiation, nonlinear optical phenomena, and the emerging field of computation of excited species. Some changes have been introduced in this “Glossary” regarding the terms related to radiation energy to make this collection fully compatible with internationally agreed-upon terms. Many links are included to various Web pages listing quantities relevant to the work of photochemists and scientists using photochemical tools.
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The Dictionary of Genomics, Transcriptomics and Proteomics · 2015
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J. W. Verhoeven · IUPAC Standards Online · 2016
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vojrclpps · Zenodo (CERN European Organization for Nuclear Research) · 2024
&lt;pre&gt;&lt;code&gt;\n&lt;p&gt;&lt;strong&gt;quantum efficiency pdf&lt;/strong&gt;&lt;br&gt;&lt;/p&gt;\n&lt;p&gt;Rating: 4.6 / 5 (4420 votes)&lt;br&gt;&lt;/p&gt;\n&lt;p&gt;Downloads: 33425&lt;br&gt;&lt;br&gt;&lt;/p&gt;\n &lt;p&gt;= = = = = \n&lt;strong&gt;&lt;a href="https://myvroom.fr/21Nr9y?keyword=quantum efficiency pdf" target="_blank"&gt;CLICK HERE TO DOWNLOAD&lt;/a&gt;&lt;/strong&gt;\n = = = = = &lt;br&gt;&lt;br&gt;&lt;/p&gt;\n&lt;p&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;/p&gt;\n&lt;p&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;&lt;/p&gt;\n&lt;p&gt;&lt;br&gt;&lt;br&gt;The quantum efficiency of solar cell is the ratio of the numbers of carriers collected by the solar cell to the number of incident photons. The solar-to-hydrogen efficiency is % The internal quantum efficiency (IQE, η IQE) is defined as the product of the injection efficiency and the radiative efficiency and is the ratio of the number of the photons emitted from the active region to the number of electrons injected into a LED. The IQE and the LEE are two principal parameters for improving the efficiency of LEDs, both A New Real-Time Quantum Efficiency Measurement System (Presentation) David L. Young1, Brian Egaas2, Scott Pinegar1, and Paul StradinsNational Renewable Energy Quantum efficiency. It is related to responsivity by: (6) where h= x J-s, is the Planck constant, c=3 x m/s, is the speed of light, q= x C, is the electron charge, R is the responsivity in A/W and is the The theoretical framework to quantify the energy consumption of quantum computation is through quan-tum thermodynamics, which provides the necessary tools to quantify and characterize the We report an internal quantum efficiency of % at nm for photocatalytic hydrogen production, demonstrating the utilization of MEG effects. Find, read 1 day ago · Herein, we used organo-soluble MoS2 Quantum Dots (QDs) as an exceptionally efficient nano-photocatalyst for the synthesis of α-amino phosphonates The intrinsic quantum ef ciency of our single-fi photon source is–99% over a tuneable frequency range of MHz around GHz, which is about times larger than the Quantum Efficiency, Q.E. Quantum efficiency is defined as the fraction of the incident photons that contribute to photocurrent. The external quantum efficiency is defined as the ratio of photons emitted from LED to the number of photons Quantum efficiency (QE) is the percentage of incident photons that an imaging device can convert into electrons. This approach requires only the quantum efficiency is used to calculate the emitted power. It describes the Quantum efficiency is one of the most important parameters used to evaluate the quality of a detector and is often called the spectral response to reflect its wavelength dependence This paper investigates the relationship between the quantum efficiency and the thermal emittance for metal cathodes using the Fermi-Dirac model for the electron distribution An elementary approach has been suggested to calculate the external quantum efficiency (EQE) of polymer light emitting diodes (PLEDs). For example, if a sensor had% QE and was exposed to 5, · PDF The construction and calibration of a high vacuum system for thin film growth and in situ quantum efficiency (QE) measurement are described.&lt;/p&gt;&lt;/code&gt;&lt;/pre&gt;
Cited by 0Open access
SpringerReference · 2011
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Martin H. Weik · 2000
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Van de Wiele, F., NATO Advanced Study Institute on Solid State Imaging · Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)) · 1976
The concept of quantum efficiency eta for a photodiode is introduced and a scheme is presented allowing the determination of eta as a function of the wavelength of incident light and the structural parameters of the photodiode. Field induced and abrupt junctions are discussed in detail, using appropriate one-dimensional approximations.
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Stan Z. Li, Anil K. Jain · Encyclopedia of Biometrics · 2009
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F. Van de Wiele · 1976
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P. Blood · IEEE Journal of Selected Topics in Quantum Electronics · 2017
The quantum efficiency relates the calculated to the measured external threshold current of a laser. This quantity is often estimated from the length dependence of the external differential efficiency above threshold, assuming the carrier density is pinned. Often it is also assumed that the internal current varies linearly with the external current; it is shown here this is not the case due to the effect of stimulated emission on the current-voltage relation of the active region. Furthermore, it has been observed that spontaneous emission from inhomogeneous quantum dots does not pin above threshold which questions the determination of their optical loss. This nonpinning is reproduced by a model in which the laser photon rate equation is coupled to rate equations for the occupation of dot states mediated by a thermal phonon distribution. The threshold current from this model agrees with a Fermi-Dirac calculation but the external efficiency above threshold is lower and its length dependence gives a smaller value of mode loss than the input value. The reasons for this behavior are analyzed and it is concluded that a Fermi-Dirac calculation does not represent the light-current characteristics in quantum dot lasers at room temperature.
Cited by 9Open access
Rolf Brendel · 2003
C.1 Measurement C.1.1 Light-biased C.1.2 Voltage-biased C.2 Standard analysis C.2.1 Front illumination C.2.2 Rear illumination C.3 Effective diffusion lengths (formulas) C.3.1 Monocrystalline semiconductors C.3.2 Polycrystalline semiconductors C.4 Laplace transform of quantum efficiency spectra C.5 Effective grain size for log-normal grain size distribution
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E. K. Gabrielsen · Cellular and Molecular Life Sciences · 1947
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Peter Corlett, Jim Rogers · 2006
The Energy Recovery Linac Prototype (ERLP) under construction at Daresbury Laboratory will utilise a photo injector as its electron source. In order to characterise the performance of the photo-cathode wafer, a low power laser is scanned across its surface and the resultant current measured to build up a map of the quantum efficiency (QE) of the wafer.
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Gerald Burns, Marshall I. Nathan · Journal of Applied Physics · 1963
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Gerald Burns, Marshall I. Nathan; Quantum Efficiency of Ruby. Journal of Applied Physics 1 March 1963; 34 (3): 703–705. https://doi.org/10.1063/1.1729335 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioJournal of Applied Physics Search Advanced Search |Citation Search
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Devin F. Smith · The University of Queensland · 2014
This thesis examines the integration of two disparate technologies in order to perform experiments in single photon quantum optics with low loss. Many technologies and experiments in quantum optics, communication, or computing require a certain fraction of the photons involved to be received at the end of the experiment, and in many cases the required efficiency has not yet been reached. This includes the famous Einstein, Podolsky, and Rosen gedanken-experiment, now implemented in the laboratory, demonstrating the existence of entanglement to unconvinced observers. Also included is the nonlocality test of John Bell, as well as technological problems such as device-independent quantum key distribution. In this thesis I perform these experiments in the high-efficiency regime. This programme requires the integration of two lines of research: improving sources of single photons, and improving detectors thereof. Until recently detector research was focussed on development, with improvements being sought for their own sake, working towards the ultimate goal of perfect photon detection. Recent years have seen these devices move into quantum photonics laboratories, allowing for previously impossible experiments to be undertaken. In this thesis, I combine high-efficiency, number-resolving, detectors with a high-efficiency entangled photon pair source, based on another line of research going back decades: the use of spontaneous parametric down-conversion to create single-photon-like modes of light, and the entanglement of the output modes in a useful way. For small demonstrations, such as the experiments mentioned above, this can emulate a single photon with enough fidelity, and low enough loss, to successfully perform the procedure. Here I push both of these technologies, and the problems of combining them, as far as I can, and solve the problems inherent with any marriage of disparate devices. I also examine the relative performance of two different steering inequalities, one linear and one quadratic, in the presence of noise, analysing my experimental data with each of them. I perform a detection- loophole free demonstration of EPR steering, violating the local bound by 200s, setting a then world record for efficiency at 62.5%.
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Lucimara S. Roman, W. Mammo, Leif A. A. Pettersson et al. · Advanced Materials · 1998
Which factors affect the device efficiency of PEOPT/C60 photodiodes (where PEOPT is a polythiophene derivative) most strongly? In order to answer this question, the performance of five-layer sandwich structure PEOPT/C60 photodiodes with different layer thicknesses has been studied. It is shown that the device efficiency is strongly connected with the geometry of the device and the optical field distribution rather than the quantity of active material. Optimization of the thickness of both the C60 layer and the polymer electrode layer can enhance performance.
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