Tip-induced strain engineering of single metal halide perovskite quantum dots

A joint research team, affiliated with Korea's UNIST, has developed a novel method capable of controlling the brightness and wavelength of quantum dots (QDs). The work was led by Professor Kyoung-Duck Park in the Department of Physics at UNIST, in collaboration with Professor Sohee Jeong in the Department of Energy Science from Sungkyunkwan University (SKKU).

The research team demonstrated the tip-induced dynamic control of strain, bandgap, and quantum yield of single CsPbBrxI3–x pQDs by using a controllable plasmonic nanocavity combined with tip-enhanced photoluminescence (TEPL) spectroscopy.

Researchers 3D print perovskite-based high-resolution display pixels

A team of researchers from Hong Kong University and the Korea Electrotechnology Research Institute (KERI) have used 3D printing to create nanoscale display pixels made of perovskite.

Scientists 3D print high-resolution display pixels made of perovskite image3D printing of perovskite nanopixels using a nanopipette. Different chemical compositions enable the fabrication of red (R), green (G), and blue (B) triple pixels. Image via KERI

Last year, the same group of scientists used liquid inks and direct ink writing to fabricate display pixels capable of emitting light. Now, turning their attention to perovskites, the researchers believe they can achieve even greater brightness levels and higher resolution displays using a similar deposition-based 3D printing technique.

The Perovskite for Displays Market Report updated to July 2021

Perovskite-Info is proud 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 July 2021.

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.

Researchers develop perovskite-based self-healing quantum emitter with unprecedented brightness

Perovskite quantum dots have great potential as quantum emitters, but their inherent instability has thus far hampered their acceptance. Professor Hao-Wu Lin of the Department of Materials Science and Engineering, Associate Professor Chih-Sung Chuu of the Department of Physics, and Professor Richard Schaller of the Department of Chemistry at Northwestern University in the United States have jointly developed a perovskite quantum emitter with high stability and self-healing ability by a self-developed, simple, and economical procedure—spray-synthesis method. The unprecedented single-photon brightness of these quantum dots is said to break the world-record.

Lin said that in contrast with other quantum emitters, perovskite quantum dots can realize single photon emission at room temperature and have excellent optical properties, such as high quantum yield and high color purity, making them ideal for displays and high-speed computing and communications.

New functional materials combine the advantages of 2D materials and hybrid perovskites

A team of researchers from the universities of Marburg, Giessen and Paderborn has combined the advantages of two-dimensional materials and hybrid perovskites, to create new materials to benefit computer chips, light-emitting diodes and solar cells.

The team explains that the development of new two-dimensional materials has, to date, been rather limited to structures with layers of rigid chemical bonds in two spatial directions - like a sheet of paper in a stack. Now, for the first time, the research team led by Dr. Johanna Heine (Inorganic Chemistry, Philipps University of Marburg) has overcome this limitation by using an innovative concept. The researchers developed an organic-inorganic hybrid crystal which consists of chains in a single direction, yet still forms two-dimensional layers in spite of this. This makes it possible to combine different material components, like pieces in a construction set, to create tailored materials with innovative properties.