scholarly journals Migratory bats are attracted by red light but not by warm-white light: Implications for the protection of nocturnal migrants

2018 ◽  
Vol 8 (18) ◽  
pp. 9353-9361 ◽  
Author(s):  
Christian C. Voigt ◽  
Katharina Rehnig ◽  
Oliver Lindecke ◽  
Gunārs Pētersons
Keyword(s):  
White Light ◽  
Red Light ◽  
Warm White Light

Luminescence behaviour of Mn4+ions in seven coordination environments of K3ZrF7

2016 ◽  
Vol 45 (23) ◽  
pp. 9654-9660 ◽  
Author(s):  
Huiying Tan ◽  
Meizhu Rong ◽  
Yayun Zhou ◽  
Zhiyu Yang ◽  
Zhengliang Wang ◽  
...  
Keyword(s):  
Blue Light ◽  
White Light ◽  
Red Light ◽  
Luminescent Center ◽  
Red Phosphor ◽  
Warm White Light

A single-phased K3ZrF7:Mn4+has been successfully synthesized, in which Mn4+playing as the luminescent center to absorb blue light and emit red light. Obvious warm white light can be observed from the WLED based on this red phosphor.

53% Efficient Red Emissive Carbon Quantum Dots for High Color Rendering and Stable Warm White‐Light‐Emitting Diodes

2017 ◽  
Vol 29 (37) ◽  
pp. 1702910 ◽  
Author(s):  
Zifei Wang ◽  
Fanglong Yuan ◽  
Xiaohong Li ◽  
Yunchao Li ◽  
Haizheng Zhong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
Light Emitting Diodes ◽  
Carbon Quantum Dots ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes ◽  
Color Rendering

scholarly journals The Preferences of Different Cultivars of Lettuce Seedlings (Lactuca sativa L.) for the Spectral Composition of Light

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1211
Author(s):  
Barbara Frąszczak ◽  
Monika Kula-Maximenko
Keyword(s):  
Chlorophyll Content ◽  
Blue Light ◽  
White Light ◽  
Leaf Shape ◽  
Red Light ◽  
Spectral Composition ◽  
Fresh Weight ◽  
Light Spectrum ◽  
Dark Green ◽  
Relative Chlorophyll Content

The spectrum of light significantly influences the growth of plants cultivated in closed systems. Five lettuce cultivars with different leaf colours were grown under white light (W, 170 μmol m−2 s−1) and under white light with the addition of red (W + R) or blue light (W + B) (230 μmol m−2 s−1). The plants were grown until they reached the seedling phase (30 days). Each cultivar reacted differently to the light spectrum applied. The red-leaved cultivar exhibited the strongest plasticity in response to the spectrum. The blue light stimulated the growth of the leaf surface in all the plants. The red light negatively influenced the length of leaves in the cultivars, but it positively affected their number in red and dark-green lettuce. It also increased the relative chlorophyll content and fresh weight gain in the cultivars containing anthocyanins. When the cultivars were grown under white light, they had longer leaves and higher value of the leaf shape index. The light-green cultivars had a greater fresh weight. Both the addition of blue and red light significantly increased the relative chlorophyll content in the dark-green cultivar. The spectrum enhanced with blue light had positive influence on most of the parameters under analysis in butter lettuce cultivars. These cultivars were also characterised by the highest absorbance of blue light.

scholarly journals The photoluminescence of single-phase warm white-light-emitting luminescence using CaSnO3: Ce3+/ Mn4+/ Dy3+ phosphors

2021 ◽  
pp. 1-12
Author(s):  
Yan-Xun Chen ◽  
Meng-Hung Tsai ◽  
I-Wei Tseng ◽  
Hung-Chi Yen ◽  
Cheng-Liang Huang
Keyword(s):  
White Light ◽  
Single Phase ◽  
Light Emitting ◽  
Warm White Light

Realization of warm white light and energy transfer studies of Dy3+/Eu3+ co-doped Li2O-PbO-Al2O3-B2O3 glasses for lighting applications

2020 ◽  
Vol 222 ◽  
pp. 117166 ◽  
Author(s):  
Nisha Deopa ◽  
Mukesh K. Sahu ◽  
P.R. Rani ◽  
R. Punia ◽  
A.S. Rao
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Warm White Light ◽  
Co Doped

Warm White Light with a High Color-Rendering Index from a Single Gd3Al4GaO12:Ce3+ Transparent Ceramic for High-Power LEDs and LDs

2018 ◽  
Vol 11 (2) ◽  
pp. 2130-2139 ◽  
Author(s):  
Shuang Liu ◽  
Peng Sun ◽  
Yongfu Liu ◽  
Tianliang Zhou ◽  
Shuxing Li ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Transparent Ceramic ◽  
Warm White Light ◽  
Color Rendering Index ◽  
Color Rendering

Tunable full-color-emitting La0.827Al11.9O19.09:Eu2+,Mn2+ phosphor for application to warm white-light-emitting diodes

2006 ◽  
Vol 89 (23) ◽  
pp. 231909 ◽  
Author(s):  
Yu-Ho Won ◽  
Ho Seong Jang ◽  
Won Bin Im ◽  
Duk Young Jeon ◽  
Jeong Soo Lee
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Full Color ◽  
Warm White Light ◽  
White Light Emitting Diodes
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