Stripe Shaped Crystal Growth and Its Model of Silicon Films on Silicon Nitride Layer by Scanning Electron Beam Annealing

Abstract
Long stripe shaped large grains 0.1–10 mm in length and up to 10 µm in width are grown in poly-Si films on a SiN layer by scanning electron beam annealing. Twin boundaries exist in the grains along the crystal stretching direction. Preannealing at 1000°C for 1 h in N2 has a good effect on the grain growth feature. A model is proposed for the explanation of the long rectangular crystal growth. Characteristics of n-MOSFET's fabricated in electron beam recrystallized poly-Si film are investigated. Threshold voltage, maximum surface mobility, and leakage current were 2.5 V, 250 cm2/V·sec, and 10-10 A, respectively.