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69 results for “light emitting diodes”
Light-Emitting Diode (LED) Manufacturing Cost Model
<p>Excel files containing a bottom-up cost-models for GaN-based white light-emitting diodes (LEDs). Covers the commercial origins of the technology around 2003, 2012 and 2020.</p> <p>Compiled as part of the research project <a href="https://web.archive.org/web/20220920225758/https://www.ceenrg.landecon.cam.ac.uk/research/climate-change-and-energy-policy/what-factors-drive-innovation-in-energy-technologies-the-role-of-technology-spillovers-and-government-investment">"What factors drive innovation in energy technologies? The role of technology spillovers and government investment"</a>, funded by the Alfred P. Sloan Foundation.</p> <table> <tbody> <tr> <th>File</th> <th>Content</th> <th>Comment</th> </tr> </tbody> <tbody> <tr> <td><a href="../api/files/cd6bf7b4-fe99-48b5-b3b2-d30c76172a61/LEDCOM2003.xlsx">LEDCOM2003.xlsx</a></td> <td>Cost model for 2003. Includes additional description and credits.</td> <td> </td> </tr> <tr> <td><a href="../api/files/cd6bf7b4-fe99-48b5-b3b2-d30c76172a61/LEDCOM2003.xlsx">LEDCOM2012.xlsx</a></td> <td>Cost model for 2012.</td> <td> </td> </tr> <tr> <td><a href="../api/files/cd6bf7b4-fe99-48b5-b3b2-d30c76172a61/LEDCOM2003.xlsx">LEDCOM2020.xlsx</a></td> <td>Cost model for 2020.</td> <td> </td> </tr> <tr> <td><a href="../api/files/cd6bf7b4-fe99-48b5-b3b2-d30c76172a61/Cost%20Model%20Inputs.xlsx">Cost Model Inputs.xlsx</a></td> <td>Inputs for the cost model (all years).</td> <td>Includes data on electricity, clean room costs, etc.</td> </tr> <tr> <td><a href="../api/files/cd6bf7b4-fe99-48b5-b3b2-d30c76172a61/Cost%20Model%20Inputs.xlsx">LEDCOMv2.zip Inputs.xlsx</a></td> <td>Archive of the original U.S. Department of Energy cost model</td> <td>Includes descriptive documents.</td> </tr> </tbody> </table> <p>Version 2: An incorrent comment in Cell D6 in the “Global” sheet in the “LEDCOM2020.xlsx” file has been removed.</p>
Nocturnal Light Emitting Diode Induced Fluorescence (LEDIF): A new technique to measure the chlorophyll a fluorescence emission spectral distribution of plant canopies in situ
<p>This repository contains data reported in the below study:</p> <p>Atherton, J., Liu, W. and Porcar-Castell, A., 2019. Nocturnal Light Emitting Diode Induced Fluorescence (LEDIF): A new technique to measure the chlorophyll a fluorescence emission spectral distribution of plant canopies in situ. <em>Remote Sensing of Environment</em>.</p> <p>Each text file contains the data-set used to produce the relevant figure (see file name). You can find the data to produce A.4. online at https://avaa.tdata.fi/web/smart/smear/ </p> <p>Please pay attention to the following before using this data.</p> <ol> <li><strong>Figure2_lampRadPanel_Wm2srnm.txt</strong>: Note that the shapes are of interest here. The magnitude is not the same as the incident light at top of canopy, as these spectra were measured in a laboratory. See paper section A.1. for more details. </li> <li><strong>Figure3_LEDIFspectra_Wm2srnm.txt</strong>: This data contains the whole observed spectrum including the non-fluorescence regions, which were saturated (warped) in the visible. The fluorescence region is approximately > 650 nm. </li> <li><strong>Figure4_AQYspectra_nm.txt</strong>: As with Figure3 the whole spectrum is included here.</li> <li><strong>FigureA3_repLEDIFspectra_[pmay/psep/usep]._nm.txt</strong>: Data from which the mean spectra (Figure3) were calculated, including the uncorrected red spectra. I have split these by canopy type to avoid name conflicts.</li> </ol> <p> </p>
Vacuum-Sublimed Cocrystalline Thin Films of Naphthalene Bisimide and Pt(II) Complex for Phosphorescent Light-Emitting Diodes
<p>Additional data to report <a href="https://doi.org/10.1002/adom.202402117">https://doi.org/10.1002/adom.202402117</a>:</p> <p>Cocrystals employing small organic molecules with platinum(II)-complexes are known to exhibit organic room-temperature phosphorescence (RTP). However, this desirable property was so far only demonstrated in the macroscopic 1:1 cocrystalline state, which limitsdevice applications outside of small single-crystal devices. Here, we show that vacuum cosublimed thin films of both components in various mixing ratios form layers with selfassembled small cocrystalline domains which exhibit RTP. This Pt(II) doping improved the photoluminescence (PL) quantum yield (ΦPL) of the now phosphorescence emitting 1,8:4,5-naphthalene bisimide (NBI) from below 0.1% to 9% in respective thin films. These doped layers were employed as active layers in light-emitting diodes to emit red electroluminescence (EL). Via time-resolved measurements the lifetime of the device EL was determined in accordance with the PL to be around 50 µs. Maximum external quantum efficiencies (EQEs) of over 0.2% with RTP emission signatures consistent with the PL of solution-grown cocrystals could be achieved.</p>
Fig. 5 in The effects of light-emitting diode and conventional lighting on sorghum physiology and sugarcane aphid interaction
Fig. 5. Mean ± SE photosynthetic rates (μmol CO2 m−2 s−1) of resistant (TX-7000 and KS-585) and susceptible (TX-2783 and DKS-37-07) sorghum cultivars grown under either conventional or light-emitting diodes. All plants were measured at 15 d afer infestation with sugarcane aphids. Bars with different letters are significantly different (Kruskal-Wallis ANOVA, df = 3; H> 27.14; P <0.01).
Fig. 7 in The effects of light-emitting diode and conventional lighting on sorghum physiology and sugarcane aphid interaction
Fig. 7. Mean ± SE chlorophyll loss at 15 d afer infestation under lightemitting diode and conventional lights (control-infested)/control.Different letters represent significant differences (P <0.001) with a Kruskal-Wallis ANOVA followed by Dunn's multiple comparison test (H = 62.629; df = 7).
Fig. 3 in The effects of light-emitting diode and conventional lighting on sorghum physiology and sugarcane aphid interaction
Fig. 3. Susceptible sorghum variety KS-585 across 4 treatments: (A) control under light-emitting diodes; (B) infested under light-emitting diodes; (C) control under conventional lights; (D) infested under conventional lights. Plants were infested with sugarcane aphids and assessed 15 d post infestation.
Fig. 2 in The effects of light-emitting diode and conventional lighting on sorghum physiology and sugarcane aphid interaction
Fig. 2. Resistant sorghum variety TX-2783 across 4 treatments: (A) control under light-emitting diodes; (B) infested under light-emitting diodes; (C) control under conventional lights; (D) infested under conventional lights. Plants were infested with sugarcane aphids and assessed 15 d post infestation.
Fig. 1 in The effects of light-emitting diode and conventional lighting on sorghum physiology and sugarcane aphid interaction
Fig. 1. Light emission spectrum of the 9 band 60-watt light-emitting diode grow panels over the visible spectrum and into the near infrared.
Fig. 6 in The effects of light-emitting diode and conventional lighting on sorghum physiology and sugarcane aphid interaction
Fig. 6. Mean ± SE stomatal conductance (mol H2O m−2 s−1) at 15 d af- ter infestation under light-emitting diode and conventional lights. Bars with different letters are significantly different (Kruskal-Wallis ANOVA, df = 3; H> 24.13; P <0.01).
Fig. 4 in The effects of light-emitting diode and conventional lighting on sorghum physiology and sugarcane aphid interaction
Fig. 4. Mean ± SE number of sugarcane aphids per plant 15 d afer infestation when grown for resistant (TX-2783 and DKS-37-07) and susceptible (TX-7000 and KS-585) sorghum cultivars grown under either conventional or light-emitting diodes. P-values represent results of a Student's t-test (df = 22) for each variety.
Light-Emitting Diode (LED) History of Innovations
<p>Excel list of innovations and technological breakthroughs related to light-emitting diodes (LEDs). Covers the origins of the technology pre 1950 up until 2020. Data is categorized by the underlying semiconductor material used in the devices (GaN, InGaN, etc.).</p> <p>Metadata includes: origin of innovation (organization, country), references (publications, patents), etc.</p> <p>Compiled as part of the research project <a href="https://web.archive.org/web/20220920225758/https://www.ceenrg.landecon.cam.ac.uk/research/climate-change-and-energy-policy/what-factors-drive-innovation-in-energy-technologies-the-role-of-technology-spillovers-and-government-investment">"What factors drive innovation in energy technologies? The role of technology spillovers and government investment"</a>, funded by the Alfred P. Sloan Foundation.</p>
First-principles simulations of exciton transfer between N-heterocyclic carbene iridium (III) complexes in blue organic light-emitting diodes
<p>N-heterocyclic carbene (NHC) iridium (III) complexes are promising for the use as blue emitters in organic light-emitting diodes. Exciton transfer between such organometallic complexes is investigated using time-dependent density functional theory calculations. Casida's equation is solved to study absorption and emission of the neutral and charged complexes using the ORCA package. The Sternheimer equation implemented in the Octopus code is extended to take into account spin-orbit coupling and is applied to investigate triplet excitations. Real-time propagation as implemented in the Octopus code is used to simulate exciton dynamics in an emitter dimer and to extract the exciton coupling via explicit integration of transition densities.</p>
Environmental impacts and economic costs of perovskite light-emitting diodes
<p>Environmental impacts and economic costs of perovskite light-emitting diodes (PeLEDs), which are based on the life cycle assessments (LCA) and techno-economic assessments (TEA). They are also the dataset for the manuscript entitled "Towards sustainable perovskite light-emitting diodes".</p>
Highly-efficient blue InGaN nanoscale light-emitting diodes
<p>Atomic structure files used for DFT calculation for manuscript "Highly-efficient blue InGaN nanoscale light-emitting diodes"<strong> </strong></p>
Earth-abundant photocatalyst for H2 generation from NH3 with light-emitting diode illumination
<p>This repository contains supplementary data for "Earth-abundant photocatalyst for H2 generation from NH3 with light-emitting diode illumination". </p>
Dataset of paper "Removal of diclofenac by UV-B and UV-C light-emitting diodes (LEDs) driven advanced oxidation processes (AOPs): Wavelength dependence, kinetic modelling and energy consumption"
<p>Dataset of paper "Removal of diclofenac by UV-B and UV-C light-emitting diodes (LEDs) driven advanced oxidation processes (AOPs): Wavelength dependence, kinetic modelling and energy consumption"</p> <ul> <li>Molar absorption coefficient of the DCF (pH 7.2), FC (pH 8.5), and H<sub>2</sub>O<sub>2</sub> (pH 6.5) in the wavelength range of 200-400 nm. </li> <li>Time-based and UV fluence-based kinetic constant and synergy factor for the DCF degradation.</li> <li>Diclofenac degradation fitted by the proposed models (UV/H<sub>2</sub>O<sub>2</sub> and UV/FC).</li> <li>Oxidant degradation fitted by the proposed models (UV/H<sub>2</sub>O<sub>2</sub> and UV/FC).</li> </ul>
Associated dataset for 'BAlGaN light emitting diode emitting at 350 nm'
<p>The data provided herein contains the raw data used in the manuscript 'BAlGaN light emitting diode emitting at 350 nm'.</p>
Effects of Light Emitting Diode Irradiation on the Conduction Parameters of the Superficial Radial Nerve
ClinicalTrials.gov study NCT01513148. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Light Emitting Diode-Red Light (LED-RL) Phototherapy for Skin Scarring Prevention
ClinicalTrials.gov study NCT03795116. IPD Sharing: NO. Countries: 1. Publications: 1.
Long-living and highly efficient bio-hybrid light-emitting diodes with zero-thermal-quenching biophosphors
<p>Bio-hybrid light-emitting diodes (Bio-HLEDs) based on color down-converting filters with fluorescent proteins (FPs) have achieved moderate efficiencies (50 lm/W) and stabilities (300 h) due to both thermal- and photo-degradation. Here, we present a significant enhancement in efficiency (~130 lm/W) and stability (>150 days) using a zero-thermalquenching bio-phosphor design. This is achieved shielding the FP surface with a hydrophilic polymer allowing their homogenous integration into the network of a light-guiding and hydrophobic host polymer. We rationalize how the control of the mechanical and optical features of this bio-phosphor is paramount towards highly stable and efficient Bio-HLEDs, regardless of the operation conditions. This is validated by the relationships between the stiffness of the FP-polymer phosphor and the maximum temperature reached under device operation as well as the transmittance of the filters and device efficiency.</p>
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.