Development of perovskite-based light emitting diodes with improved stability 5.0

• Main Author: Wang, Melvin Jingkai
• Other Authors: Yong Ken Tye
• Format: Final Year Project
• Language: English
• Published: 2019
• Subjects: DRNTU::Engineering::Electrical and electronic engineering
• Online Access: http://hdl.handle.net/10356/78236
• Institution: Nanyang Technological University

The display industry has been involved in evolving, high-colour concentration, economical and high-capability emitters for use in electronic devices. Hence perovskite LEDs may become the in-market demand due to their better adaptation, high efficiency and lower cost by changing the atomic composition in the perovskite structure, meaning, be easily tuned to emit specific colours. As such, development of a perovskite LEDs will be explored in this report. Comparing to conventional lighting materials, Cesium lead halide perovskite nanocrystals (CsPbX3) emits light more rapidly and strongly. Producing nanocrystals from lead halide perovskites by substituting either with iodine chlorine, or bromine, swiftly emit different coloured light through the range of visible wavelengths. These are factors that allow them to be suitable for making LEDs. The process can be made via solution and doesn’t require much energy expanded and temperatures to be heated highly. With this knowledge, a substantial of these materials can be worked onto numerous substrates. This report serves to present the fabrication process of colours red, green, and blue with Microwave Irradiation Method for perovskite LEDs, thereafter with improved stability through surface ligand management.