Journal Article electroluminescence Hybrid Materials Light-emitting diodes Quantum dots Research Support, Non-U.S. Gov't Review active matrix displays anthracenes charging colloidal quantum dots commercialization of quantum dot light‐emitting diodes copper electrodes display applications efficiency roll-off energy transfer interfacial layers light-emitting devices light-emitting diodes nanocrystals organic-inorganic hybrid device structure oxide semiconductors quantum dot light‐emitting diodes quantum dot-based light-emitting diodes quantum dots silicon solution processes thin-film transistors type-I heterostructures white light-emitting diodes