Quantum Dots Applications

Quantum Dot NIR Photodetectors

Near infrared sensing gains a widespread application in such devices as photo-cameras (for face recognition), autonomous cars (obstacles detection), AR and VR (for eyes tracking), in night vision and surveillance, biomedical imaging, quality control and product inspection. New sensor technologies are enablers for the digital transformation allowing us to integrate devices for IoT or collect Big Data. Current active NIR absorbers, such as InGaAs and Ge, have high cost of production (high temperature epitaxial method) and doesn’t allow to combine with Si-based photodiode in a single device. PbS QDs have higher sensitivity, wider absorption range and compatibility with Si-based sensors.

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Quantum Dots for UV Sensors

Silicon photodiode is the most widely used commercial device to capture light in a broad range of applications, from imaging to light sensors. Due low penetration depth of high energy UV photons in the silicon-based layer, these sensor are not sensitive enough for UV light with the wavelengths below 400 nm. Perovskite Quantum Dots can be utilized as the color-converting layer to enhance the UV light sensitivity of Si-based photodectors.

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Quantum Dot LEDs

QD LEDs is an emerging technology that promises to enhance current OLED displays with higher brightness, durability and color purity. It will be an ultimate solution for flexible and curved displays in TVs, mobile and wearable devices, virtual and augmented reality glasses, automotive displays and signage. Perovskite Quantum Dots show a promise in that field alongside with InP and CdSe quantum dots. CsPb(Cl/Br)3 and CsPbBr3 QDs are especially efficient for blue and green QD LEDs.

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Quantum Dot LCD Display

Quantum dots extend the color gamut of LCD displays, making them present more vibrant colors with better contrast in TVs, laptops and tablets. This is an ideal solution for HDR displays to meet Rec2020 standard. On top of that, QDs help to reduce the energy consumption. Nowadays, many TV makers adopted this technology. QUANTUM SOLUTIONS offers novel green Perovskite QDs for LCD application (“LCD backlighting” and “LCD color filters”). These materials have high photoluminescence efficiency (up to 100 %), narrow band emission (< 20-25 nm). This makes them a better quality and more environmentally friendly alternative to the current CdSe and InP QDs.

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