Results 21 to 30 of about 2,168 (231)

Growth, Stimulated Emission, Photo‐ and Electroluminescence of InGaN/GaN EL‐Test Heterostructures [PDF]

physica status solidi (c), 2002
The electroluminescence properties of InGaN/GaN electroluminescence test heterostructures grown on sapphire and silicon substrates in the temperature interval of 300–380 K were investigated as a function of current at DC and pulsed excitation. A competition between the short wavelength shift of the spectral maximum position with current increase due to
E.V. Lutsenko, V.N. Pavlovskii, V.Z. Zubialevich, A.I. Stognij, A.L. Gurskii, V.A. Hryshanau, A.S. Shulenkov, G.P. Yablonskii, O. Schön, H. Protzmann, M. Lünenbürger, B. Schineller, Y. Dikme, R.H. Jansen, M. Heuken   +14 more
openaire   +1 more source

A benchmark dataset for defect detection and classification in electroluminescence images of PV modules using semantic segmentation

Systems and Soft Computing, 2023
Electroluminescence (EL) images enable defect detection in solar photovoltaic (PV) modules that are otherwise invisible to the naked eye, much the same way an x-ray enables a doctor to detect cracks and fractures in bones. This paper presents a benchmark
Lawrence Pratt, Jana Mattheus, Richard Klein   +2 more
doaj   +1 more source

A Test of Electroluminescent Panels for a Helicopter Emergency Escape Lighting System [PDF]

, 1984
Abstract : The effectiveness of a lighting system composed of electroluminescent panels and proposed for use in illuminating escape hatches was tested. It was visible to light-adapted subjects in turbid water at the distance and viewing angles required by the Naval Air Development Center.
Vera Robbins, S. M. Luria, Bernard L. Ryack   +2 more
openaire   +1 more source

Predicting Module I-V Curves from Electroluminescence Images with Deep Learning

, 2020
Electroluminescence images have been used to qualify the performance of PV modules. Yet, to assess the status and techno-economic performance of a module in a string, quantitative information is required.
Hauch, Jens, Doll, Bernd, Peters, Ian Marius, Winkler, Thilo, Buerhop-Lutz, Claudia, Brabec, Christoph, Rodrigues Abreu, Sandy, Doll, GmbH, Veranstalter: Conexio   +8 more
core   +1 more source

Non-Destructive Failure Detection and Visualization of Artificially and Naturally Aged PV Modules

Energies, 2018
Several series of six-cell photovoltaic test-modules—intact and with deliberately generated failures (micro-cracks, cell cracks, glass breakage and connection defects)—were artificially and naturally aged.
Gabriele C. Eder, Yuliya Voronko, Christina Hirschl, Rita Ebner, Gusztáv Újvári, Wolfgang Mühleisen   +5 more
doaj   +1 more source

The impact of static wind load on the mechanical integrity of different commercially available mono‐crystalline photovoltaic modules

Engineering Reports, 2020
Mechanical integrity of Photovoltaic (PV) modules, which is dependent upon the materials used and the manufacturing process, plays an important role in their performance and electrical output.
Rizwan M. Gul, Muhammad Ali Kamran, Fahad Ullah Zafar, Muhammad Noman   +3 more
doaj   +1 more source

Degradation analysis of 5-year field exposed photovoltaic modules using low-cost thermography, electroluminescence and I-V curve tests in Ecuador [PDF]

2020 International Conference on Smart Energy Systems and Technologies (SEST), 2020
Detection of degradation of photovoltaic (PV) modules is important for the maintenance and operation of solar PV farms to reduce production losses. Infrarred (IR) Thermography, Electroluminescence (EL) and I-V curve tracers are detection techniques that generally use high-cost equipment, which limits their use in developing countries due to the tight ...
M. A. Davila-Sacoto, L. G. Gonzalez, J. L. Espinoza, Luis Hernandez-Callejo   +3 more
openaire   +1 more source

Applying InP/ZnS Green-Emitting Quantum Dots and InP/ZnSe/ZnS Red-Emitting Quantum Dots to Prepare WLED With Enhanced Photoluminescence Performances

IEEE Access, 2020
Based on blue LED chips to excite Ce-doped yttrium aluminum garnet (YAG: Ce3+) yellow phosphors, InP/ZnS green-emitting quantum dots (QDs) and InP/ZnSe/ZnS red-emitting QDs are used as light conversion materials for WLEDs to improve the color rendering ...
Luqiao Yin, Doudou Zhang, Yuxian Yan, Fan Cao, Gongli Lin, Xuyong Yang, Wanwan Li, Jianhua Zhang   +7 more
doaj   +1 more source

Development of an RF IV waveform based stress test procedure for use on GaN HFETs

, 2012
This paper reports on the development of an RF IV waveform based stress test procedure. DC and low-voltage RF characterisation was carried out before and after high power RF stress.
Tasker, Paul J., Benedikt, Johannes, McGenn, William, Uren, Michael J.   +3 more
core   +1 more source

Design, characterization and installation of the NEXT-100 cathode and electroluminescence regions

, 2023
NEXT-100 is currently being constructed at the Laboratorio Subterráneo de Canfranc in the Spanish Pyrenees and will search for neutrinoless double beta decay using a high-pressure gaseous time projection chamber (TPC) with 100 kg of xenon.
Lebrun, P., Soto-Oton, J., Simón, A., Martín-Albo, J., Para, A., Herrero-Gómez, P., Jones, B.J.P., Rodriguez-Tiscareno, M., Aparicio, B., Ferreira, A.L., Martínez-Vara, M., Díaz, G., Palmeiro, B., Romo-Luque, C., Pelegrin, J., Cebrián, S., Herrero, V., Torrent, J., Cossío, F.P., Renner, J., Mistry, K., Echevarria, C., Palacio, J., Dickel, T., Hernando Morata, J.A., Bayo, A., Trettin, A., Martínez-Lema, G., Byrnes, N., Cárcel, S., Santos, F.P., Aranburu, A.I., Rivilla, I., Foss, F.W., Álvarez, V., Marques, A.P., Stogsdill, K., Arazi, L., Esteve, R., Larumbe, A., Ifergan, Y., Benlloch-Rodríguez, J.M., Norman, L., Grocott, J.W.R., Meziani, Z.E., Veloso, J.F.C.A., Arnquist, I.J., Shomroni, I., Hafidi, K., Felkai, R., Pérez Maneiro, M., Miller, R.L., Silva, K., Elorza, M., Lopez, F., López-March, N., Rogero, C., Seemann, M., Cid, L., Larizgoitia, L., Navarro, K.E., Church, E., Ferrario, P., Nygren, D.R., Freixa, Z., Nuñez, A., Soleti, S.R., Teixeira, J.M.R., Monrabal, F., Adams, C., Novella, P., Hauptman, J., Hervés Carrete, C., Parmaksiz, I., Sorel, M., Escada, J., Ballester, F., Mano, R.D.P., Freitas, E.D.C., Oblak, E., Conde, C.A.N., Gómez-Cadenas, J.J., Henriques, C.A.O., Rogers, L., Redwine, A.B., Oliver, D., Brodolin, A., Pingulkar, S., Auria-Luna, F., Dey, E., González, R., Guenette, R., Almazán, H., Mora, F.J., Waiton, J., Querol, M., Munson, B., Castillo, A., Borges, F.I.G.M., Bailey, K., Fernandes, L.M.P., Azevedo, C.D.R., Romeo, B., Usón, A., Molina-Canteras, J., Toledo, J.F., Yubero, A., Contreras, T., dos Santos, J.M.F., del Barrio-Torregrosa, M., Madigan, R., Ayet, S., Monteiro, C.M.B.   +112 more
core   +2 more sources