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Lukasz Gryko, Urszula Joanna Blaszczak and Maciej Zajkowski
Disinfection and sterilization based on the use of UVC radiation are the key technologies ensuring health and safety. Their reliability depends on assuring the effectiveness of the performed process. In recent years, the rapid development of LED sources ...
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Muyi Wang, Song Wang, Renjie Chen, Mengmeng Zhu, Yunpeng Liu, Haojie Ding, Jun Ren, Tongtong Xuan and Huili Li
All-inorganic perovskite nanocrystals (NCs) have attractive potential for applications in display and lighting fields due to their special optoelectronic properties. However, they still suffer from poor water and thermal stability. In this work, green Cs...
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Rahmayati Alindra, Purnomo Sidi Priambodo and Kalamullah Ramli
Light Fidelity (LiFi) technology has gained attention and is growing rapidly today. Utilizing light as a propagation medium allows LiFi to promise a wider bandwidth than existing Wireless Fidelity (WiFi) technology and enables the implementation of cellu...
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Bu Lv, Ziling Liu, Yu Chen, Shuaiqin Lan, Jing Mao, Zhifeng Gu, Aimin Wang, Feng Yu, Xing Zheng and Hebert Ely Vasquez
Light is one of the most important environmental factors affecting the growth and reproduction of algae. In this study, the effect of various LED colors on the productivity, chlorophyll (Chl-a, Chl-b, and total Chl), protein, and carbohydrate content of ...
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Ayshah S. Alatawi
Several industrial and scientific underwater applications require high-speed wireless connectivity. Acoustic communications have low data rates and high latency, whereas attenuation in seawater severely limits radio frequency communications. Optical wire...
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Jiyong Kim and Jungho Kim
We theoretically model the near-field (NF) absorption for a multilayer micro-cavity (MMC) structure and investigate the contribution of the NF absorption to the dipole radiation power in top-emitting organic light-emitting diodes (OLEDs). The NF absorpti...
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Hoang Vu, Ngoc Minh Kieu, Do Thi Gam, Seoyong Shin, Tran Quoc Tien and Ngoc Hai Vu
Redistribution of LED radiation in lighting is necessary in many applications. In this article, we propose a new optical component design for LED lighting to achieve a higher performance. The design consists of a commercial collimator and two linear Fres...
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Hung-Chung Li, Pei-Li Sun, Yennun Huang and Ming Ronnier Luo
The study aims to propose an approach of white LED spectral optimization based on mesopic luminance and color gamut volume for dim lighting conditions. Three optimal white LED spectra with relatively higher mesopic luminance and color gamut volume, the h...
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Oleg K. Karaduta, Aleksei F. Deon and Yulian A. Menyaev
Photomatrix therapeutic systems (PMTS) are widely used for the tasks of preventive, stimulating and rehabilitation medicine. They consist of low-intensity light-emitting diodes (LEDs) having the quasi-monochromatic irradiation properties. Depending on th...
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Peng Xiao, Ting Dong, Jianing Xie, Dongxiang Luo, Jian Yuan and Baiquan Liu
Recently, thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs) have attracted both academic and industrial interest due to their extraordinary characteristics, such as high efficiency, low driving voltage, bright luminanc...
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Jianmin Shi, J. Matthew Chudomel and Richard Fu
A new class of wide energy gap benzotriimidazole materials have been synthesized by a two-step condensation reaction. All of the benzotriimidazole compounds have p-p* absorption bands in the range of 250?400 nm. The photoluminescence (PL) quantum efficie...
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Peter Jarvis, Olivier Autin, Emma H. Goslan and Francis Hassard
Ultraviolet light-emitting diodes (UV-LEDs) have recently emerged as a viable technology for water disinfection. However, the performance of the technology in full-scale drinking-water treatment systems remains poorly characterised. Furthermore, current ...
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Byoung-Seong Jeong
In this study, the optimal structure for obtaining high green color purity was investigated by modeling quantum dot (QD)?organic light-emitting diodes (OLED). It was found that even if the green quantum dot (G-QD) density in the G-QD layer was 30%, the f...
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Giovanni Maira, Antonio M. Chiarelli, Stefano Brafa, Sebania Libertino, Giorgio Fallica, Arcangelo Merla and Salvatore Lombardo
System suitable for human brain imaging (fNIRS, DOT).
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Yonghua Wu, Jiali Yang, Shuanglong Wang, Zhitian Ling, Hao Zhang and Bin Wei
White organic light-emitting diodes (WOLEDs) with higher performance, which have enjoyed application in high-quality lighting sources, are here demonstrated with improved optical and electrical properties. The integration of a novel transparent distribut...
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Ahmed Kamel, Ana Palacios, Manuel Fuentes and Marta Vivar
The aim of this study is to verify the reciprocity law in the wastewater disinfection process using UV light. The optical power UV-LEDs used were 1.6 mW and 50 mW, and the wavelengths were 265 nm and 275 nm. E. coli, Enterococcus faecalis, and Clostridiu...
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Christos Melissas, Filippos Bantis, Christodoulos Dangitsis, Stefanos Kostas and Athanasios Koukounaras
Tomato, which is mainly established with grafted seedlings, is one of the most popular vegetables worldwide with a high nutritional value,. Market demand for grafted seedlings is high in specific seasons; thus, commercial nurseries face a problem of limi...
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Sergey Yu. Karpov
A semi-empirical model of carrier recombination accounting for hole localization by composition fluctuations in InGaN alloys is extended to polar and nonpolar quantum-well structures. The model provides quantitative agreement with available data on wavel...
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Jun-Young Park, Soo-Jong Park and Byeong-Kwon Ju
We analyzed the degradation features by measuring the capacitance?voltage characteristics after electrically aging blue thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs). The measurement was investigated in terms of th...
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Annika K. Jägerbrand
Light emitting diodes (LEDs) and SSL (solid state lighting) are relatively new light sources, but are already widely applied for outdoor lighting. Despite this, there is little available information allowing planners and designers to evaluate and weigh ...
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