Our work on low-dimensionality perovskites was just published online in Science Bulletin.

March 19, 2020

Title:Low-dimensionality perovskites yield high electroluminescence

Light-emitting diodes (LEDs) are changing the energy and light- ing industry due to their high power efficiencies, low energy consumption, and long operational lifetimes. While epitaxially- grown LEDs are the current industry standard, their incompatibil- ity with large-area displays and flexible substrates precludes their use in many applications. Solution-processed light-emitting materials are more versatile and can be easily coated onto a variety of substrates using modern deposition techniques such as vapor deposition, spin-coating, dip-coating, and spray-painting. With these advantages, organic light-emitting diodes (OLEDs) have been widely applied to TVs, cell phones, and semi-transparent displays. They, however, suffer from resolution-transparency trade-off and incompatibility with high-temperature processes. Quantum dot (QD) light-emitting diodes (QLEDs) have sharper emission features and higher stabilities. However, QD emitting layers also have low mobilities, and thus the devices require large voltages for opera- tion due to the presence of surface organic ligands.