Results 101 to 110 of about 6,294 (295)
Bilateral key comparison on luminous flux COOMET.PR-K4.1. final report
, 2017 This report describes an international bilateral key comparison on luminous flux of tungsten lamps between the National Scientific Centre 'Institute of Metrology' (NSC 'IM', Ukraine) and All-Russian Research Institute for Optical and ...
G Tolstykh +4 more
core +1 more source
Fluorene‐based blue emitters: On the path to electrically pumped organic lasers
FlexMat, EarlyView.Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan +7 more
wiley +1 more source
IEEE Photonics JournalThis research investigates the light quality and thermal management of InGaN and InGaAlP Light Emitting Diodes (LEDs) under various light regulation methods.
Miroslav Slouka +3 more
doaj +1 more source
Estimations of Luminous Flux of a Backlight System
, 2011 [[abstract]]本研究主要是探討如何使用輝度計，以數值分析（Numerical analysis）方法，反推導背光系統光通量及發光效率。在傳統估計方法上，只要是利用積分球來分析背光系統之發光效率。本文利用積分球量測系統求出全光通量，且將此結果視為參考值，比較利用各種不同的估計方法所得的發光效率。本實驗結果，亦討論了如何將全發光面劃分成較少的面積，計算全光通量，好處是可以減少計算時間。最後，說明各種估計方法的優勢及缺點。[[abstract]]The research presents with ...
張良港, Chang Liang-Kang
core
FlexMat, EarlyView.By strategically incorporating boron/nitrogen multi‐resonance (B/N‐MR) core into the o‐carborane unit, perfect exciton utilization can be achieved as well as exhibiting stimuli‐responsive properties. The resulting DBN‐oCb‐based organic light‐emitting diode (OLED) demonstrated an impressive external quantum efficiency of 22.3%, the highest reported for ...
Jiasen Zhang +8 more
wiley +1 more source
Ain Shams Engineering JournalToday, solar energy is used for various applications such as photovoltaic-powered light emitting diodes (LEDs) streetlights. Such systems are composed of a photovoltaic (PV) panel, a battery storage, and an LED light integrated with often two power ...
Saeed Danyali +6 more
doaj +1 more source
FlexMat, EarlyView.A novel two‐dimensional heterojunction assembled from graphene oxide and exfoliated black phosphorus via van der Waals interactions is proposed to replace widely used poly(3,4‐ethylenedioxythiophene)‐polystyrene sulfonate for efficient hole injection layer in organic light‐emitting diodes, achieving impressive electroluminescence performance.
Yuefeng Li +9 more
wiley +1 more source
Revisiting multi-domain empirical modelling of light-emitting diode luminaire
Cogent EngineeringIn this work, an empirically derived multi-domain model of a light-emitting diode (LED) luminaire is proposed. The optical, electrical, and thermal characteristics of LEDs are obtained from the data sheets provided by manufacturers.
Shailesh K R, Tanuja Shailesh
doaj +1 more source
E3S Web of Conferences, 2018 This study presents the influence of the distance between phosphor layers in the dual-layer and triplelayer remote package on luminous efficacy. During the simulation, it is recognized that an appropriate distance can produce higher luminous flux of the ...
Ngoc Long Nguyen +4 more
doaj +1 more source
Emerging Perovskite Solar Cells for Building‐Integrated Photovoltaic Applications
Information &Functional Materials, EarlyView.In this review, we discuss technological approaches of perovskite solar cells that are highly compatible with the requirements of building‐integrated photovoltaic applications, including semi‐transparent, colorful, and flexible perovskite solar cells.
Yongke Liang +4 more
wiley +1 more source