Determination of Optimum Thermalization Distance Based on Trade-off Relationship between Resolution, Line Edge Roughness and Sensitivity of Chemically Amplified Extreme Ultraviolet Resists
Determination of Optimum Thermalization Distance Based on Trade-off Relationship between Resolution, Line Edge Roughness and Sensitivity of Chemically Amplified Extreme Ultraviolet Resists
复制标题
基于化学放大型极紫外光刻胶分辨率、线边缘粗糙度和灵敏度权衡关系确定最佳热化距离
DOI:
10.2494/photopolymer.24.137
复制
发表时间:
2011
影响因子:
0.8
通讯作者:
S. Tagawa
中科院分区:
文献类型:
--
作者:
T. Kozawa;S. Tagawa
In chemically amplified extreme ultraviolet (EUV) resists, the thermalization distance of secondary electrons is a major cause of the degradation of the original EUV aerial image and increases the line edge roughness (LER). However, the longer the thermalization distance is, the more acid generators are decomposed. As the acid concentration increases, the acid diffusion length required for the polarity change of resist polymers decreases. With the reduction in diffusion length, the resolution blur induced by acid diffusion is suppressed. In this study, we investigated the optimum thermalization distance for obtaining the best latent image quality. The optimum thermalization distance for 32 nm line-and-space patterns was 7 nm at 10 wt% acid generator (TPS-tf) concentration. The optimum thermalization distance decreased with the half-pitch of line-and-space patterns. For 11 nm half-pitch, the optimum thermalization distance was 3 nm, which is approximately the same as that in the poly(4-hydroxystyrene) matrix.
登录
查看更多内容
DOI:
--
发表时间:
2008
期刊:
Appl. Phys. Express
影响因子:
--
作者:
R. Hirose;T. Kozawa;S. Tagawa;T. Kai;T. Shimokawa
通讯作者:
T. Shimokawa
DOI:
--
发表时间:
2007
期刊:
Jpn. J. Appl. Phys.
影响因子:
--
作者:
R. Hirose;T. Kozawa;S. Tagawa;T. Kai;T. Shimokawa
通讯作者:
T. Shimokawa
DOI:
--
发表时间:
2005
期刊:
Jpn. J. Appl. Phys.
影响因子:
--
作者:
H. Yamamoto;T. Kozawa;A. Nakano;K. Okamoto;S. Tagawa;T. Ando;M. Sato;H. Komano
通讯作者:
H. Komano
DOI:
--
发表时间:
2006
期刊:
J. Appl. Phys 45
影响因子:
--
作者:
K. Natsuda;T. Kozawa;K. Okamoto and S. Tagawa
通讯作者:
K. Okamoto and S. Tagawa
DOI:
--
发表时间:
2006
期刊:
Jpn. J. Appl. Phys.
影响因子:
--
作者:
A. Nakano;T. Kozawa;K. Okamoto;S. Tagawa;T. Kai;T. Shimokawa
通讯作者:
T. Shimokawa