7-4: High Mobility Hydrogenated Polycrystalline In-Ga-O (IGO:H) Thin-Film Transistors formed by Solid Phase Crystallization
Sid's Digest Of Technical Papers(2021)
Abstract
Hydrogenated polycrystalline In‐Ga‐O (IGO:H) thin‐film transistor (TFT) was demonstrated by low‐temperature solid phase crystallization (SPC). The amorphous IGO:H was deposited by H 2 doping during RF magnetron sputtering in Ar and O 2 atmosphere. An intentionally doped H 2 in IGO:H film suppressed the crystallization during the film deposition. The amorphous IGO:H film could be converted into the poly‐IGO:H film by SPC below 250 °C. A maximum field effect mobility of 50.6 cm 2 /Vs was obtained from the SPC poly‐IGO:H TFT. The polycrystalline oxide semiconductors (OSs) are simple and cost‐effective approach to achieve high‐performance OS TFTs for future displays.
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Key words
solid phase crystallization,transistors,thin‐film thin‐film
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