What is short channel effect?

The short channel effect refers to the phenomenon in semiconductor devices, particularly in MOSFETs, where the electrical characteristics of the device are significantly influenced by its reduced channel length. As the channel length decreases, short-channel effects such as threshold voltage roll-off, drain-induced barrier lowering (DIBL), and increased leakage currents become more pronounced. These effects can lead to reduced device performance and increased power consumption, making it critical to consider when designing advanced integrated circuits at smaller technology nodes.