发明申请
US20080254233A1 PLASMA-INDUCED CHARGE DAMAGE CONTROL FOR PLASMA ENHANCED CHEMICAL VAPOR DEPOSITION PROCESSES 审中-公开
用于等离子体增强化学蒸气沉积过程的等离子体诱导电荷损失控制

PLASMA-INDUCED CHARGE DAMAGE CONTROL FOR PLASMA ENHANCED CHEMICAL VAPOR DEPOSITION PROCESSES
摘要:
Methods of depositing amorphous carbon films on substrates are provided herein. The methods reduce or prevent plasma-induced charge damage to the substrates from the deposition of the amorphous carbon films. In one aspect, an initiation layer of amorphous carbon is deposited at a low RF power level and/or at a low hydrocarbon compound/inert gas flow rate ratio before a bulk layer of amorphous carbon is deposited. After the deposition of the initiation layer, the RF power, hydrocarbon flow rate, and inert gas flow rate may be ramped to final values for the deposition of the bulk layer, wherein the RF power ramp rate is typically greater than the ramp rates of the hydrocarbon compound and of the inert gas. In another aspect, a method of minimizing plasma-induced charge damage includes depositing a seasoning layer on one or more interior surfaces of a chamber before the deposition of the amorphous carbon film on a substrate therein or coating the interior surfaces with an oxide or dielectric layer during manufacturing.
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