Vacuum ultraviolet photochemical selective area atomic layer deposition of Al2O3 dielectrics
Vacuum ultraviolet photochemical selective area atomic layer deposition of Al2O3 dielectrics
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Al2O3 电介质的真空紫外光化学选区原子层沉积
DOI:
10.1063/1.4905887
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发表时间:
2015
期刊:
影响因子:
1.6
通讯作者:
Chalker P
中科院分区:
文献类型:
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作者:
Chalker P
We report the photochemical atomic layer deposition of Al{sub 2}O{sub 3} thin films and the use of this process to achieve area-selective film deposition. A shuttered vacuum ultraviolet (VUV) light source is used to excite molecular oxygen and trimethyl aluminum to deposit films at 60°C. In-situ QCM and post-deposition ellipsometric measurements both show that the deposition rate is saturative as a function of irradiation time. Selective area deposition was achieved by projecting the VUV light through a metalized magnesium fluoride photolithographic mask and the selectivity of deposition on the illuminated and masked regions of the substrate is a logarithmic function of the UV exposure time. The Al{sub 2}O{sub 3} films exhibit dielectric constants of 8 – 10 at 1 MHz after forming gas annealing, similar to films deposited by conventional thermal ALD.
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DOI:
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发表时间:
2010
期刊:
影响因子:
--
作者:
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通讯作者:
M. Sung
DOI:
--
发表时间:
2011
期刊:
影响因子:
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DOI:
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2004
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DOI:
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发表时间:
2017
期刊:
影响因子:
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