Alvarez, Agustin O Riquelme, Antonio J Fuentes-Pineda, Rosinda Mas-Marzá, Elena Marsal, Lluis F Almora, Osbel Anta, Juan A Fabregat-Santiago, Francisco
Published in
Physica Scripta
Light intensity modulated photocurrent and photovoltage spectroscopies, IMPS and IMVS respectively, are characterization techniques for studying charge carrier transport and recombination properties of photosensitive samples such as photovoltaic solar cells. In these techniques controlling the modulated light flux is key to obtaining accurate resul...
Otabara, T. Tatebayashi, J. Yoshimura, T. Timmerman, D. Ichikawa, S. Fujiwara, Y.
Published in
Japanese Journal of Applied Physics
We report on the demonstration of GaN:Eu/GaN nanowire (NW) LEDs grown by organometallic vapor phase epitaxy (OMVPE). The GaN:Eu/GaN NW LED structures with a large aspect ratio (>8) are formed by selective-area OMVPE, and have pedestals that are free from lateral overgrowth of p-GaN in order to prevent short circuiting. The structures are embedded i...
Meijer, Davy van der Vleut, Jaimie Weldegergis, Berhane T. Costaz, Thibault Duarte, Marcus Vinicius Alfenas Pekas, Apostolos van Loon, Joop J.A. Dicke, Marcel
The use of light-emitting diode (LED) lights in horticulture allows growers to adjust the light spectrum to optimize crop production and quality. However, changes in light quality can also influence plant–arthropod interactions, with possible consequences for pest management. The addition of far-red light has been shown to interfere with plant immu...
Snyman, Lukas Ogudo, Kingsley Tegnege, Zerihun Polleux, Jean-Luc Billabert, Anne-Laure Aharoni, Herzl
A series of on-chip optical links of 50-μm length, utilizing 650 to 850 nm propagation wavelength, with Si avalanche-mode optical sources, silicon nitride-based waveguides, and Si Ge detectors, have been designed and realized, with a 0.35-μm SiGe radio frequency bipolar integrated circuit process. The optical coupling between the optical source and...
Azarifar, Mohammad Cengiz, Ceren Arik, Mehmet
Published in
Journal of Physics D: Applied Physics
Solid state lighting devices with high power densities require accurate characterization, as the rise of chip temperature impacts its optical, electrical, and lifetime characteristics. A detailed experimental study is performed in order to analyze opto-electro-thermal behavior as new high-power devices like laser diodes (LDs) are becoming of intere...
Wang, Qi Li, Ke Yang, Haohan Lin, Donghai Shih, Wan Y Shih, Wei-Heng
Published in
Nanotechnology
Inorganic perovskite cesium lead iodide nanocrystals (CsPbI3 NCs) are good candidates for optoelectronic devices because of their excellent properties of remarkable luminous performance (high luminous efficiency, narrow luminous spectral line), and high photoelectric conversion efficiency by using simple preparation method. But their inherent poor ...
Forero-Martinez, Nancy C Lin, Kun-Han Kremer, Kurt Andrienko, Denis
Published in
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
The field of organic semiconductors is multifaceted and the potentially suitable molecular compounds are very diverse. Representative examples include discotic liquid crystals, dye-sensitized solar cells, conjugated polymers, and graphene-based low-dimensional materials. This huge variety not only represents enormous challenges for synthesis but al...
Tountas, Marinos Soultati, Anastasia Armadorou, Konstantina-Kalliopi Ladomenou, Kalliopi Landrou, Georgios Verykios, Apostolis Skoulikidou, Maria-Christina Panagiotakis, Stylianos Fillipatos, Petros-Panagis Yannakopoulou, Konstantina
...
Published in
Journal of Physics: Photonics
High-performance perovskite light-emitting diodes (PeLEDs) require a high quality perovskite emitter and appropriate charge transport layers to facilitate charge injection and transport within the device. Solution-processed n-type metal oxides represent a judicious choice for the electron transport layer (ETL); however, they do not always present s...
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Light quality is essential in in vitro cultures for morphogenesis process. Light emitting diodes system (LED) allows adjustment as desired and the most appropriate light spectrum. The study analyzed the influence of different LED light quality on the balance of endogenous phytohormones and related compounds (PhRC) in in vitro multiplied axillary sh...
Lee, Geon-Hui Jeon, Cheonhoo Mok, Jee Won Shin, Sangbaie Kim, Su-Kyoung Han, Hye Hyeon Kim, Seong-Jong Hong, Sang Hoon Kim, Hwanhee Joo, Choun-Ki
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© 2022 The Authors. Advanced Science published by Wiley-VCH GmbHDiabetic retinopathy is currently treated by highly invasive repeated therapeutic injections and surgical interventions without complete vision recovery. Here, a noninvasive smart wireless far red/near-infrared (NIR) light emitting contact lens developed successfully for the repeated t...
