Perovskite Quantum Dots (PQDs)
Perovskites are materials that share a crystal structure similar to the mineral called perovskite, which consists of calcium titanium oxide (CaTiO3).
Depending on which atoms/molecules are used in the structure, perovskites can possess an impressive array of interesting properties including superconductivity, ferroelectricity, charge ordering, spin dependent transport and much more. Perovskites therefore hold exciting opportunities for physicists, chemists and material scientists.
Quantum dots (QDs), sometimes referred to as semiconducting nanocrystals (NCs), are miniscule particles of a semiconducting material with diameters in the range of 2-10 nanometers (10-50 atoms). Quantum dots have properties labeled as intermediate between bulk semiconductors and discrete atoms or molecules. Their optoelectronic properties change as a function of both size and shape. QDs demonstrate optical and electronic properties different from those of larger particles. In fact, QDs tend to exhibit quantum size effects in their optical and electronic properties, like tunable and efficient photoluminescence (PL), with narrow emission and photochemical stability. This is why QDs have been incorporated as active elements in a wide variety of devices and applications, some of which are already commercially available, such as QD-based displays.
Perovskite quantum dots (PQDs) are a class of quantum dots based on perovskite materials. While these are relatively new, they have already been shown to have properties matching or surpassing those of the metal chalcogenide QDs: they are more tolerant to defects and have excellent photoluminescence quantum yields and high colour purity. Such attractive properties are extremely suited for electronic and optoelectronic applications and so perovskite quantum dots have significant potential for real world applications, some of which are already emerging, including LED displays and quantum dot solar cells.
Researchers magnetize perovskite quantum dots with a novel doping method
Researchers from the University of Oklahoma, University of Chicago, Texas A&M University, Northwestern University and the U.S. Naval Research Laboratory have reported a major advance in materials science - magnetizing perovskite quantum dots through controlled manganese (Mn²⁺) doping.
Doping transition metal ions like Mn²⁺ into colloidal quantum dots introduces novel optical and magnetic properties, but doing so efficiently in cesium lead bromide (CsPbBr₃) perovskite quantum dots (QDs) has long been a major challenge. These perovskite QDs are attractive light-emitting materials because of their structural flexibility, bright emission, and low fabrication cost, yet traditional synthesis methods often fail to incorporate magnetic dopants without sacrificing uniformity or quantum efficiency.
Stable and efficient mixed-halide quantum dot LEDs via pseudohalogen engineering
Mixed-halide bromine-iodine perovskite quantum dots (PeQDs) offer excellent spectral tunability for red PeLEDs, but surface defects promote halide migration and non-radiative recombination, reducing performance. To address this issue, a Ningbo University research team has developed an innovative post-treatment strategy employing pseudohalogen inorganic ligands in acetonitrile to simultaneously etch lead-rich surfaces and passivate defects in-situ.
This method produces high-quality CsPb(Br/I)3 PeQDs with suppressed halide migration, enhanced photoluminescence quantum yield (PLQY), and improved film conductivity.
New molecular strategy boosts efficiency of perovskite QLED displays
Solution-processed perovskite quantum dot (PeQD) light-emitting diodes (QLEDs) represent a promising and scalable alternative for next-generation displays by eliminating the need for vacuum deposition of emissive and charge transport layers. A major challenge, however, is that solution-processed charge transport layers (CTLs) often damage the emissive PeQD layer, leading to photoluminescence quenching and reduced device efficiency.
To overcome this limitation, researchers at China's Ningbo University have introduced two key molecular additives into CsPbBr₃ PeQD inks: an organic pseudohalide, dodecyl dimethylthioacetamide (DDASCN), and a photosensitive ligand, pentaerythritol tetrakis(3-mercaptopropionate) (PTMP).
Perovskite quantum dot-based fluorescent sensor array coupled with machine learning to promote efficient bacteria detection
Conventional pathogen detection methods tend to suffer from limitations such as prolonged processing time, operational complexity, or insufficient sensitivity. To address the need for rapid and highly sensitive detection technologies, researchers from China's Hefei University of Technology have developed a machine learning-assisted fluorescent sensor array strategy, constructing a 3 × 6 sensing platform utilizing three water-soluble perovskite quantum dots (PQDs) with distinct fluorescent properties.
The array generates significant fluorescence color changes through electrostatic interactions between PQDs and bacterial surfaces, as well as Aggregation-Caused Quenching (ACQ) effects. Relative fluorescence color changes (ΔRGB) were captured using a smartphone and subsequently analyzed through machine learning algorithms, including K-Nearest Neighbors (KNN) and principal component analysis (PCA).
Perovskite-Info launches a new edition of its Perovskite for Displays Market Report
Perovskite-Info is happy to announce an update to our Perovskite for the Display Industry Market Report. This market report, brought to you by the world's leading perovskite and OLED industry experts, is a comprehensive guide to next-generation perovskite-based solutions for the display industry that enable efficient, low cost and high-quality display devices. The report is now updated to August 2025, with all the latest commercial and research activities.
Reading this report, you'll learn all about:
- Perovskite materials and their properties
- Perovskite applications in the display industry
- Perovskite QDs for color conversion
- Prominent perovskite display related research activities
The report also provides a list of perovskite display companies, datasheets and brochures of pQD film solutions, an introduction to perovskite materials and processes, an introduction to emerging display technologies and more.
Yicai Core Light to start pilot production of perovskite QD-based microLED microdisplays
According to reports, Chinese startup Yicai Core Light will begin mass production of a new microLED display chip that uses perovskite quantum dot technology to achieve a full-color, micro-scale display. The Company is preparing to start producing its microLED microdisplays in the autumn of 2025, in a pilot production line that will be built with help from Ningbo-based Yongjiang Laboratory.
Founder and General Manager Li Fei explained that the chip acts like a 'translator,' accurately converting digital information into the light and images a user sees. Li Fei believes that this technology will improve augmented reality (AR) technology and solve two of the biggest hurdles holding back mainstream adoption of augmented reality glasses: poor outdoor visibility and short battery life.
UbiQD secures $20M in Series B funding
UbiQD, which recently acquired BlueDot Photonics, has announced the close of its $20 million Series B financing round. The round was led by Phoenix Venture Partners (PVP), with participation from Builders VC, Azura Group, Builders Vision, Stout Street Capital, Seraph Partners, Scout Ventures, New Mexico Vintage Fund, and others.
UbiQD's proprietary quantum dot technology aims to revolutionize light utilization in greenhouse agriculture, solar energy, security and other critical industries. By enhancing the efficiency, durability, and sustainability of fluorescence in these applications, the company is addressing major challenges across multiple sectors.
Midsummer secures €2.8 million to develop quantum dot CIGS/perovskite tandem solar cells
Swedish thin film solar cell manufacturer Midsummer has been chosen by the Italian Ministry of University and Research to participate in a consortium with the aim to develop "Quantum Dot CIGS/Perovskite Tandem" solar cells.
The "Quantum Dot Enhanced Lightweight Solar Cells" (QDELS) project aims to develop and validate a new production process for CIGS (Cu In Ga Se) solar cells with a tandem perovskite structure enhanced with quantum dots (QD). The ultimate objective is to develop and validate a new process to enhance the efficiency of CIGS cells, surpassing conventional silicon cells in all parameters.
New method uses perovskite QDs to enable control of quantum light at room temperature
The ability to control the color, or emission wavelength, of light from quantum sources is central to the development of secure quantum communication networks and photonic-based computing. However, most systems capable of tuning quantum light require extreme conditions, for example, high voltages, strong magnetic fields, and even cryogenic environments. Now, researchers from Singapore's Agency for Science, Technology and Research (A*STAR), Singapore University of Technology and Design, National University of Singapore, University of Macao and University of Southern Denmark found a way to achieve substantial wavelength tuning at ambient conditions using tiny, tunable nanostructures and low-voltage electrical control.
The team relied on a hybrid system made of perovskite quantum dots (QDs) and nanostructured antimony telluride (Sb₂Te₃), a phase-change material with unusual optical and electronic properties. The scientists were able to achieve a remarkable shift in light emission energy of over 570 meV, significantly surpassing previous reports where only minor adjustments were possible.
Researchers develop perovskite QDs-based method to improve lithium-sulfur batteries
Researchers from China's Bohai University, Harbin Institute of Technology, Yanshan University and Xi’an Jiaotong University have developed a composite catalytic material based on CsPbBr3 halide perovskite quantum dots for use as the sulfur host for lithium-sulfur batteries (LSBs), which are seen as promising energy storage devices that face some challenges like low conductivity of the sulfur cathode and shuttle effect of polysulfides.
The team explained that CsPbBr3 perovskite quantum dots, as nanoscale perovskite materials, combine the inherent excellent charge transport properties and structural stability of perovskite with the unique size and surface effects of quantum dots.
