Schottky barrier height engineering of Al contacts on Si by embedded Au nanoparticles
By controlling the number of Au NPs on Si, the Al/Au NPs/Si SBH has been modified. Au NPs induced SBH lowering is more effective in Al/n-Si (0.11eV) compared with Al/p-Si (0.05eV). The size of NPs is the primary influential factor in local electric field enhancement. Other factors are Al/Au work function difference and Al/SiAu/Si SBH difference. ETTI model was determined to best describe the Al/Au NPs/Si SBH lowering.
electric field enhancement aluminum contact colloidal gold nanoparticles (au nps) silicon-based schottky barrier diode spin-coating