Results 21 to 30 of about 9,488 (354)

Magnetoelectroluminescence in organic light-emitting diodes [PDF]

The Journal of Chemical Physics, 2016
The magnetoelectroluminescence of conjugated organic polymer films is widely accepted to arise from a polaron pair mechanism, but their magnetoconductance is less well understood. Here we derive a new relationship between the experimentally measurable magnetoelectroluminescence and magnetoconductance and the theoretically calculable singlet yield of ...
Joseph E. Lawrence, Alan M. Lewis, David E. Manolopoulos, P. J. Hore   +3 more
openaire   +5 more sources

Absorbance based light emitting diode optical sensors and sensing devices [PDF]

, 2008
The ever increasing demand for in situ monitoring of health, environment and security has created a need for reliable, miniaturised sensing devices. To achieve this, appropriate analytical devices are required that possess operating characteristics of ...
O'Toole, Martina, Dermot Diamond, O\u27Toole, Martina, Martina O’Toole, Diamond, Dermot, Martina O’Toole   +5 more
core   +1 more source

Application of Single-Phase Supply AC-DC-AC VFD for Power Factor Improvement in LED Lighting Devices Loaded Power Distribution Lines

Applied Sciences, 2022
More and more light-emitting diode lighting devices (LED) are being connected to modern power distribution lines. In addition to its many positive features, this poses problems in terms of reactive power compensation. The large number of LEDs interacting
Gytis Petrauskas, Gytis Svinkunas
doaj   +1 more source

The reflection of diode technology light emitting (LED) on the modular design of external lighting

الاكاديمي, 2017
Search marked (the reflection of diode technology light emitting (LED) on the modular design of external lighting) is an analytical study of the units, external lighting for gardens and adopted in its work on the diode technology emitting light to reach ...
Esam Nouri Majeed
doaj   +1 more source

Optimized LED-Integrated Agricultural Facilities for Adjusting the Growth of Water Bamboo (Zizania latifolia)

Applied Sciences, 2020
We investigated a light emitting diode (LED) lighting system applied to a water bamboo field during winter season at night, and the results indicated that this lighting system can prevent the stunting of water bamboo leaves and further assist its growth.
Vincent K. S. Hsiao, Teng-Yun Cheng, Chih-Feng Chen, Hao Shiu, Yong-Jin Yu, Chun-Fu Tsai, Pin-Chen Lai, Min-Chia Tsai, Chih-Chi Yang, Hung-Yu Chien, Ku-Fan Chen, Yung-Pin Tsai   +11 more
doaj   +1 more source

Emergence of Nanoplatelet Light-Emitting Diodes [PDF]

Materials, 2018
Since 2014, nanoplatelet light-emitting diodes (NPL-LEDs) have been emerged as a new kind of LEDs. At first, NPL-LEDs are mainly realized by CdSe based NPLs. Since 2016, hybrid organic-inorganic perovskite NPLs are found to be effective to develop NPL-LEDs. In 2017, all-inorganic perovskite NPLs are also demonstrated for NPL-LEDs.
Xiao, Peng, Huang, Junhua, Yan, Dong, Luo, Dongxiang, Yuan, Jian, Liu, Baiquan, Liang, Dong   +6 more
openaire   +3 more sources

A Comparative Life Cycle Assessment and Costing of Lighting Systems for Environmental Design and Construction of Sustainable Roads

Buildings, 2023
The management of the life cycle of the transport network is one of the main challenges of sustainable mobility. Roads and highways cause significant damage to the ecosystem. Specifically, lighting systems contribute to climate change, energy consumption,
Alberto Picardo, Manuel J. Galván, Víctor M. Soltero, Estela Peralta   +3 more
doaj   +1 more source

Nanofabrication of gallium nitride photonic crystal light-emitting diodes [PDF]

, 2010
We describe a comparison of nanofabrication technologies for the fabrication of 2D photonic crystal structures on GaN/InGaN blue LEDs. Such devices exhibit enhanced brightness and the possibility of controlling the angular emission profile of emitted ...
Rahman, Faiz, Rahman, F., De La Rue, Richard M., Parsons, K., Z. Khokhar, Ali, J. Abbott, Steve, D. Dawson, Martin, P. Johnson, Nigel, Abbott, Steve J., Watson, I.M., Charlton, Martin D.B., MacIntyre, D.S., Watson, I.A., MacIntyre, Douglas S., Xiong, C., Charlton, Martin, Johnson, N.P., Hubbard, G., De La Rue, R.M., Gong, Zheng, M. De La Rue, Richard, Charlton, M.D.B., Gu, E., Johnson, Nigel P, Abbott, S.J., S. Macintyre, Douglas, M. Watson, Ian, Macintyre, Douglas S, Tillin, Martin, Johnson, Nigel P., Massoubre, D., Rue, Richard M. De La, Xiong, Chang, Khokhar, A.Z., Watson, Ian M., Gu, Erdan, D.B. Charlton, Martin, Hubbard, Graham, Dawson, M.D., Gong, Z., Tillin, M., Massoubre, David, Khokhar, A.Z, Khokhar, Ali Z., Dawson, Martin D., Parsons, Keith, Charlton, M.D.B   +46 more
core   +1 more source

Light-Emitting Diode (LED) versus High-Pressure Sodium Vapour (HPSV) Efficiency: A Data Envelopment Analysis Approach with Undesirable Output

Energies, 2022
Road lighting is essential to ensure the safety and comfort of its users, especially in preventing accidents and aiding visual tasks. The monumental shift from conventional road lighting technology to light-emitting diode (LED) lighting is driven by ...
Nina Sakinah Ahmad Rofaie, Seuk Wai Phoong, Muzalwana Abdul Talib @ Abdul Mutalib   +2 more
doaj   +1 more source

Energy-neutral solar-powered street lighting with predictive and adaptive behaviour [PDF]

, 2014
Street lighting can enhance the safety and security of residential and commercial areas. However, its installation and operation is expensive: cables must be installed, and power is drawn from the grid which is typically dominated by non-renewable ...
Geoff V. Merrett, Weddell, Alex S., Merrett, Geoff V., Sei Ping Lau, Neil M. White, Alex S. Weddell, Lau, Sei Ping, White, NM   +7 more
core   +1 more source