Light-emitting Electrochemical Cell Based on Perovskite Nanoparticles or Quantum Dots

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes a light-emitting electrochemical cell (LEC) that uses perovskite nanoparticles or quantum dots as the light-emitting material, integrated with an ionic liquid or an ion-conducting matrix. Unlike traditional multi-layered OLEDs, these LECs feature a simple single-layer design, can be fabricated under ambient air conditions on various substrates (including flexible ones), and achieve stable, tunable light emission across a wide spectrum. The perovskite-based nanomaterials offer high efficiency, color tunability, and improved stability over previous approaches.

Use CasesContent extracted from patent full text and abstract with AI.

• Flat panel displays and screens for TVs, smartphones, computers, and tablets
• General illumination and smart lighting solutions for homes, offices, and industry
• Wearable and flexible lighting or display devices integrated into textiles and clothing
• Low-cost signage, decorative lighting, and advertising panels
• Optoelectronic devices such as sensors and light-based communication systems
• Medical diagnostics and phototherapeutic tools requiring controllable light emission
• Novel ‘smart packaging’ and interactive surfaces

BenefitsContent extracted from patent full text and abstract with AI.

• Simplified device architecture allows easier and lower-cost manufacturing, especially on flexible or unconventional substrates
• Can be fabricated under air (non-inert) conditions, reducing production complexity and cost
• Air-stable electrodes and device layers improve operational lifetime and device robustness
• Tunability of emission wavelength by chemical composition and nanoparticle/quantum dot size
• High color purity, photoluminescence yield, and power efficiency compared to prior devices
• Reduced vulnerability to moisture and oxygen, ensuring long-term performance even in ambient conditions
• Potential for large-area, printable, and scalable production methods such as spin-coating, spray-coating, or printing

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The present invention relates to the field of light-emitting electrochemical cells. In particular, the present invention relates to a light-emitting electrochemical cell based on perovskite nanoparticles or quantum dots in combination with an ionic liquid or a mixture of an ionically conducting material and an inorganic salt. Moreover, the present invention relates to methods of manufacturing such a light-emitting electrochemical cell and to uses of such a light- emitting electrochemical cell.