Abstract

The deposition of hydrogenated amorphous silicon (a-Si:H) films over a large area were performed using an electron cyclotron resonance (ECR) plasma with a multi-slot antenna. The uniformity of the ECR plasma was within 5% over 200 mm in diameter, and the density and temperature of electrons in front of a substrate were 7 × 10 16m −3 and 6 eV, respectively. Hydrogenated amorphous silicon films were deposited from flowing SiH 4(10%) He gas. The deposited films were almost 200 mm in diameter, corresponding to that of the plasma. The deposition rate, optical band gap, and infrared (IR) absorption of the films were investigated to find whether the multi-slot antenna was effective for chemical vapor deposition (CVD); as the substrate temperature was increased, the optical band gap decreased.

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