Buffer layers are essential in nanotechnology for several reasons:
Defect Reduction: They help in reducing the number of dislocations and other defects that can occur due to lattice mismatch between the substrate and the active layer. Stress Relief: Buffer layers can alleviate the stress caused by differences in thermal expansion coefficients, which is crucial during the fabrication process. Electrical Isolation: They can provide electrical insulation between different layers, which is important in semiconductor devices. Improved Adhesion: Buffer layers can enhance the adhesion between the substrate and the subsequent layers, ensuring better structural integrity.