نتایج جستجو برای: luminous efficiency
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Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Tuomas Poikonen Name of the doctoral dissertation Characterization of Light Emitting Diodes and Photometer Quality Factors Publisher School of Electrical Engineering Unit Department of Signal Processing and Acoustics Series Aalto University publication series DOCTORAL DISSERTATIONS 165/2012 Field of research Measurement Scienc...
Usually, VO2 films prepared by a magnetron sputtering method exhibit good durability and excellent solar modulation efficiency (ΔTsol). However, its undesirable low-temperature luminous transmittan...
We report on our new analysis of the spatial and kinematical distribution of warm and cold molecular gas in the nearby, prototypical, luminous infrared galaxy NGC 6240, which was undertaken to explore the origin of its unusually luminous H2 emission. The gas components are known to be distributed between the two merging nuclei, forming an off-nuclear molecular gas concentration. By comparing th...
Formamidinium lead halide (FAPbX3) has attracted greater attention and is more prominent recently in photovoltaic devices due to its broad absorption and higher thermal stability in comparison to more popular methylammonium lead halide MAPbX3. Herein, a simple and highly reproducible room temperature synthesis of device grade high quality formamidinium lead bromide CH(NH2)2PbBr3 (FAPbBr3) collo...
One of the methods for creating white light with light-emitting diodes (LEDs) is mixing radiations from several different colored LEDs. Mixed-color LEDs are expected to have greater luminous efficacy because they do not undergo downconversion losses like phosphor-converted white LEDs. However, in reality mixed-color LED systems require extra optical elements to reduce spatial color variation an...
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