A novel, spectrally tunable light-source utilizing light emitting diodes (LEDs) for radiometric, photometric, and colorimetric applications is described. The tunable source can simulate standard sources and can be used as a transfer source to propagate photometric and colorimetric scales from calibrated reference instruments to test artifacts with minimal increase in uncertainty. In this protot...

The application of green phosphorescent complex Tris[2-phenylpyridinato-C,N]iridium(III) Ir(ppy)3 as a dopant in the hole transporting layer (HTL) of Organic light emitting diode (OLED) structure: HTL/ElL/ETL has been studied. We have found that devices containing from 4 wt.% 6 wt.% Ir(ppy)3 emit pure green light with CIE (x;y) chromaticity coordinates 0.2969; 0.4860 0.3184; 04905 very close to...

Wireless optical technology like visible light communication is a new approach in terms of security, speed, usability, bandwidth and flexibility for data communication. More and more people with their devices access wireless internet today, due to which clogged airwaves are going to make transmission slow and is full of interference. The solution to this problem of slow speed is that data is to...

In this paper, we perform surface plasmon-coupled emission studies on Rhodamine 6G molecules embedded in a corrugated structure of a thin film composed of fluorinated silica particles, and a binding medium. Our results show enhancements of photoluminescence due to surface corrugation. By varying the size of the fluorinated silica nanoparticles we were able to control the surface correlation len...

Highly efficient exciplex systems incorporating a heptazine derivative () as an electron acceptor and 1,3-di(9H-carbazol-9-yl)benzene () as an electron donor are developed. An organic light-emitting diode containing 8 wt% : as an emitting layer exhibits a maximum external quantum efficiency of 11.3%.

Deep blue electroluminescence is highly required for organic light-emitting diode (OLED) technology. We report, in this work, emitting fluorophores OLED with low CIE y.

Aim: The purpose of this study was to compare the difference in the output intensity of Light Emitting Diode (LED) light cure (LC) devices with and without a protective sleeve and its clinical significance.  Materials and Methods: The output intensity of 152 LC units in dental offices across the state of Odisha were examined. The collection of related information included an average number of e...

Root canal disinfection is one of the main factors governing success of endodontic therapy. Antimicrobial photodynamic therapy (aPDT) is presented as a promising antimicrobial therapy that can eliminate microbiota present in infected root canal systems. In this study, a series of experiments investigated the effects of aPDT on cell viability and biofilm degradation ability of endopathogenic mic...