Pi-Tai Chou

Professor, National Taiwan University
  • National Taiwan University
  • Taiwan

High efficiency green InP quantum dot light-emitting diodes by balancing electron and hole mobility

Upon modifying cadmium-free InP quantum dot emitting layer by passivation with 1,4-butanediamine and zinc iodide, we successfully decrease electron mobility and enhances the hole transport in the InP QLED. As a result of optimizing the electrons and hole injection, it leads to green 545 nm InP QLED with a maximum quantum efficiency (EQE) of 16.3% and a current efficiency of 57.5 cd/A.
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Sep 17, 2021