Liquid Type Nontoxic Photoluminescent Nanomaterials for High Color Quality White-Light-Emitting Diode

Abstract

High-brightness white-light-emitting diodes (w-LEDs) with excellent color quality is demonstrated by using nontoxic nanomaterials. Previously, we have reported the high color quality w-LEDs with heavy-metal phosphor and quantum dots (QDs), which may cause environmental hazards. In the present work, liquid-type white LEDs composed of nontoxic materials, named as graphene and porous silicon quantum dots are fabricated with a high color rendering index (CRI) value gain up to 95. The liquid-typed device structure possesses minimized surface temperature and 25% higher value of luminous efficiency as compare to dispensing-typed structure. Further, the as-prepared device is environment friendly and attributed to low toxicity. The low toxicity and high R9 (87) component values were conjectured to produce new or improve current methods toward bioimaging application.

Green and low-cost synthesis of zinc oxide nanoparticles and their application in transistor-based carbon monoxide sensing

“…However, at present, there has been a tremendous upsurge of interest in the synthesis and characterization of novel NPs capable of exhibiting semiconductor properties. [24][25][26] Such interest originates from the fact that the varied properties of semiconductor nanomaterials hold huge promise for many emerging technological regimes such as solar cells, 27 nanophotonics, [7][8][9] nanoelectronics, 4-6 catalysis, [1][2][3] light-emitting diodes, 28,29 laser technology, 30,31 chemical, 32,33 biosensing, 34,35 energy-conversion, 36,37 miniaturized devices, 38,39 etc.…”

Ultrawide Color Gamut Perovskite and CdSe/ZnS Quantum-Dots-Based White Light-Emitting Diode with High Luminous Efficiency

“…White light-emitting diodes (WLEDs), also known as solid-state devices, have recently been intensively investigated. The major advantages of WLEDs are low-power consumption and long lifetime resulting in their great potential for lighting, signal, and display applications [1,2,3,4,5]. Many important phosphors played key roles in color conversion function to fulfill several applications in the last two decades [6,7,8,9].…”