Atomic Layer Deposition of HfO2 Thin Films Employing a Heteroleptic Hafnium Precursor
Atomic Layer Deposition of HfO2 Thin Films Employing a Heteroleptic Hafnium Precursor
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采用杂配铪前体的 HfO2 薄膜的原子层沉积
DOI:
10.1002/cvde.201106934
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发表时间:
2012
影响因子:
--
通讯作者:
A. Devi
中科院分区:
文献类型:
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作者:
A. P. Milanov;H. Parala;C. Wenger;C. Baristiran-Kaynak;K. Lakribssi;T. Toader;C. Bock;D. Rogalla;H.-W. Becker;U. Kunze;A. Devi
The application of a heteroleptic hafnium amide‐guanidinate precursor for the deposition of HfO2thin films via a water‐assisted atomic layer deposition (ALD) process is demonstrated for the first time. HfO2films are grown in the temperature range 100–300 °C using the compound [Hf(NMe2)2(NMe2‐Guan)2] (1). This compound shows self‐limiting ALD‐type growth characteristics with growth rates of the order of 1.0–1.2 Å per cycle in the temperature range 100–225 °C. The saturation behavior and a linear dependence on film thickness as a function of number of cycles are verified at various temperatures within the ALD window. The as‐deposited HfO2films are characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM), Rutherford backscattering spectroscopy (RBS), X‐ray photoelectron spectroscopy (XPS), and electrical measurements. For a direct comparison of the precursor performance with that of the parent alkyl amide [Hf(NMe2)4] (2), ALD experiments are also performed employing compound2under similar process conditions, and in this case no typical ALD characteristics are observed.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
Ke Xu;A. Milanov;A. Devi
通讯作者:
A. Devi
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
L. Nyns;A. Delabie;J. Swerts;S. Elshocht;S. Gendt
通讯作者:
S. Gendt
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
X. Shi;H. Tielens;S. Takeoka;T. Nakabayashi;L. Nyns;C. Adelmann;A. Delabie;T. Schram;L. Ragnarsson;M. Schaekers;L. Date;R. Schreutelkamp;S. Elshocht
通讯作者:
S. Elshocht
影响因子:
8.6
作者:
Park, Tae Joo;Kim, Jeong Hwan;Hwang, Cheol Seong
通讯作者:
Hwang, Cheol Seong
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
Reji Thomas;A. Milanov;R. Bhakta;U. Patil;M. Winter;P. Ehrhart;R. Waser;A. Devi
通讯作者:
A. Devi