Energy Efficient Lighting TRIZ Cases

A multi-phosphor white LED balances high CRI and luminous efficacy by splitting red emission into broadband orange-red and narrowband manganese fluoride.

Mn4+-doped oxyfluoride phosphors narrow red emission to 625-635 nm, improving white LED color rendering and luminous efficacy.

A rare-earth red phosphor composition narrows emission width at 610-655 nm to improve LCD color purity and lumen efficiency while avoiding afterimage.

A CMgF3 core-shell coating protects Mn4+ fluoride red phosphors from water and oxygen while preserving LED luminescence.

A hexagonal oxynitride phosphor composition sustains red-to-nearinfrared emission intensity under high-energy excitation with less brightness loss.

Controlled Hammett acidity enables Mn4+ red phosphors with sub-10 μm, narrow particle distributions that reduce internal reflection and ease LED packaging.

Controlled Hammett acidity enables Mn4+ red phosphors with D50 below 10 μm and narrow size distribution for easier LED packaging.

Controlling β-SiAlON phosphor bulk density helps stabilize white LED emission and reduce chromaticity variation across products.

Surfactant-assisted organic nanoparticles improve color conversion efficiency and photochemical stability without heavy-metal quantum dots.

Multiple electromagnetic sources improve plasma uniformity in tubular electrodeless lamps, boosting brightness while limiting thermal hot spots.

A three-phosphor blue LED mix broadens the spectrum to raise CRI above 95 and improve color fidelity closer to natural light.

Controlled Ga distribution and 5-40 μm particle sizing improve blue excitation, luminous efficiency, and white LED phosphor cost.

A Cr3+-doped Mg3Ga2GeO8-type phosphor boosts 700-900 nm emission, helping CMOS-based vital sensing capture clearer pulse and blood pressure data.

A blue LED with visible and near-infrared phosphors boosts near-IR output while avoiding red-light bursts and costly multi-chip packaging.

Dual phosphors and a controlled blue-to-fluorescent intensity ratio let this LED produce visually golden light with strong color rendering.

Combining yellow-green, broadband orange-red, and narrowband Mn fluoride phosphors lifts CRI while preserving white LED efficacy.

An organic dye color converter shifts LED output above 520 nm, protecting photoresist while avoiding filter heat loss and preserving efficiency.

A chromium-activated phosphate phosphor enables compact infrared emitters with broad spectra, lower power use, and better stability for detection.

Raising the silicone-to-phosphor ratio in heavily loaded LED packages limits humidity-driven trench formation and reduces long-term color shift.

Balanced phosphor ratios tune melanopic ratio and color temperature to improve color rendering, comfort, and visibility under natural-like light.

Combining two narrow-band red photoluminescence materials boosts LED filament efficacy and CRI by avoiding broad red emission beyond 650 nm.

Controlled fluoride phosphor particle sizes enable smooth, uniform thin films for mini-LED and micro-LED wavelength conversion with high quantum efficiency.

Neodymium particles on green phosphor absorb unwanted emission peaks, improving display color purity while a silicon oxide coating preserves stability.

A dual-band yellow and red phosphor mix converts harmful blue light into a solar-like spectrum while preserving pure white output and color uniformity.

Mn(IV)-activated oxidofluorides deliver stable red emission under heat and humidity while improving white LED efficiency and color rendering.

A multistage reducing-burn process lets Sr/Ba chloroapatite phosphors raise europium loading while preserving internal quantum efficiency.

A Mn2+/Eu3+/R3+ oxide phosphor delivers stable red afterglow from white powder without special synthesis gas or harmful emissions.

A multi-material electrochromic medium adds green-light absorption to eliminate greenish tint and deliver neutral gray color accuracy.

Blue LED excitation with tuned phosphor ratios balances melanopic ratio and color rendering across target color temperatures.

A narrowband manganese red fluoride phosphor boosts white LED efficacy while keeping CRI Ra at 80 or higher.

Specific phosphor blends tune color temperature and melanopic ratio to improve color rendering, comfort, and visibility in emitted light.

A Si-rich core and Si-lean surface in Eu-doped β-sialon phosphor boosts green-light luminance while preserving particle stability.

An oxyfluoride-added nitride phosphor boosts brightness while suppressing light-emission degradation at high temperatures.

A dual-wavelength MQW LED adds direct green emission and red phosphor conversion to overcome narrowband green phosphor limits in LCD backlights.

Adding SrAl2O4 as a second phase and using spark plasma sintering limits LuAG grain growth, improving brightness and light extraction.

Phosphor or quantum-dot conversion and diffusion powders create even white light without a thick light guide plate.

Controlled grain-boundary oxygen content evens Eu distribution and improves phosphor efficiency.

Blended nitride phosphor composition stabilizes color output by preventing crucible reactions during high temperature firing.

Silicone polymer ligands bind quantum dots via amine, carboxy, and phosphine groups to overcome stability and efficiency trade-offs in solid-state lighting.

Oxidizing a single light-emitting material creates distinct charged species that resolve color disproportion in OLEDs.

Ba2Si5N8:Eu phosphor converts blue light to narrow band yellow emission, achieving 410 lm/Wopt while avoiding broad spectrum losses.

A3-2xEuxMP3O9N oxynitride phosphors convert violet light into stable blue emission.

A two-dimensional perovskite phosphor emits broadband white light through solution-state synthesis at room temperature.

Fluorine oxidizing agents treat milled Mn4+ doped phosphors to boost quantum efficiency and thermal resilience against humidity degradation.

Phosphor-converted blue light illuminates color filters to resolve the contradiction between color purity and panel transmittance.

Optimizing the (D50-D10)/D50 ratio to 0.60 or less resolves the trade-off between high luminance and particle size uniformity in beta-sialon phosphors.

Silver-doped glass ceramic replaces epoxy resin to eliminate yellowing and improve luminescent intensity.