LED Quantum Well Structure for Carrier Injection Efficiency

The active layer is segmented into multiple quantum well layers with different indium composition ratios (first quantum well layer with lower In ratio, second quantum well layer with higher In ratio). This segmentation creates a cascaded energy structure that guides high-energy electrons through sequential energy reduction steps, preventing carrier over-shooting while maintaining efficient carrier injection and recombination.

Different regions of the active layer are given different local properties through varying indium composition ratios in different quantum well layers. The first quantum well layer has lower indium content for initial carrier capture, while the second quantum well layer has higher indium content for final recombination, creating localized energy zones that systematically reduce carrier energy without loss.

The active layer is divided into multiple quantum well layers with progressively increasing indium composition ratios. This segmentation transforms a simple single-layer structure into a multi-layer cascaded structure that systematically manages carrier energy, preventing over-shooting while maintaining manufacturability through standardized growth processes.

The indium composition ratio parameter is systematically changed across different quantum well layers (increasing from first to second layer). This parameter variation creates the energy cascade effect needed to prevent carrier over-shooting, while the changes are implemented within controllable manufacturing parameters for practical fabrication.