Reducing Block Copolymer Interfacial Widths through Polymer Additives

被引:32
作者
Sunday, Daniel F. [1 ]
Kline, R. Joseph [1 ]
机构
[1] NIST, Mat Sci & Engn Lab, Gaithersburg, MD 20899 USA
关键词
SELECTIVELY ASSOCIATING HOMOPOLYMER; X-RAY-SCATTERING; DIBLOCK COPOLYMERS; COPOLYMER/HOMOPOLYMER BLENDS; DENSITY MULTIPLICATION; MOLECULAR-WEIGHT; PHASE-BEHAVIOR; REFLECTIVITY; LITHOGRAPHY; TRIBLOCK;
D O I
10.1021/ma502015u
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
There is a need to design new materials to achieve smaller pitches and reduced interfacial widths for block copolymer (BCP) lithography. One option is the use of blends, where the addition of a homopolymer which selectively associates to one of the blocks results in the increase in the FloryHuggins interaction parameter (?) between the two phases. In order to explore the effect of this approach on the interfacial width between BCP components, poly(vinylphenol) (PVPH) was added to polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA). Multilayers of this blend were characterized using resonant soft X-ray reflectivity (RSoXR), a measurement that allows the contrast between PS, PMMA, and PVPH to be selectively tuned by varying the beam energy. RSoXR measurements confirmed that PVPH is uniformly distributed throughout the PMMA block. The interfacial width of the block was reduced by 20% upon the addition of a mass fraction of 8% PVPH. The interfacial width of homopolymer bilayers was also investigated in order to probe the same effect at higher PVPH concentrations. A blend of 70:30 PMMA:PVPH capped by a PS layer resulted in an interfacial width of 2.75 +/- 0.1 nm, a decrease of more than 50% compared to the two-component system.
引用
收藏
页码:679 / 686
页数:8
相关论文
共 64 条
[1]   THE MORPHOLOGY OF SYMMETRIC DIBLOCK COPOLYMERS AS REVEALED BY NEUTRON REFLECTIVITY [J].
ANASTASIADIS, SH ;
RUSSELL, TP ;
SATIJA, SK ;
MAJKRZAK, CF .
JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (09) :5677-5691
[2]   On the interfacial width in triblock versus diblock copolymers: A neutron reflectivity investigation [J].
Anastasiadis, SH ;
Retsos, H ;
Toprakcioglu, C ;
Menelle, A ;
Hadziioannou, G .
MACROMOLECULES, 1998, 31 (19) :6600-6604
[3]   Resonant soft x-ray scattering from structured polymer nanoparticles [J].
Araki, Tohru ;
Ade, Harald ;
Stubbs, Jeffrey M. ;
Sundberg, Donald C. ;
Mitchell, Gary E. ;
Kortright, Jeffrey B. ;
Kilcoyne, A. L. D. .
APPLIED PHYSICS LETTERS, 2006, 89 (12)
[4]   Block Copolymer Lithography [J].
Bates, Christopher M. ;
Maher, Michael J. ;
Janes, Dustin W. ;
Ellison, Christopher J. ;
Willson, C. Grant .
MACROMOLECULES, 2014, 47 (01) :2-12
[5]  
Bosse A. W., 2011, J VAC SCI TECHNOL B, V29
[6]   Tuning Block Copolymer Phase Behavior with a Selectively Associating Homopolymer Additive [J].
Bosse, August W. ;
Tirumala, Vijay R. ;
Lin, Eric K. .
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2009, 47 (21) :2083-2090
[7]   Interfacial fluctuations in an ideal block copolymer resist [J].
Bosse, August W. ;
Lin, Eric K. ;
Jones, Ronald L. ;
Karim, Alamgir .
SOFT MATTER, 2009, 5 (21) :4266-4271
[8]   MOLECULAR-WEIGHT AND POLYDISPERSITY EFFECTS AT POLYMER POLYMER INTERFACES [J].
BROSETA, D ;
FREDRICKSON, GH ;
HELFAND, E ;
LEIBLER, L .
MACROMOLECULES, 1990, 23 (01) :132-139
[9]   On Modulating the Phase Behavior of Block Copolymer/Homopolymer Blends via Hydrogen Bonding [J].
Chen, Shih-Chien ;
Kuo, Shiao-Wei ;
Jeng, U-Ser ;
Su, Chun-Jen ;
Chang, Feng-Chih .
MACROMOLECULES, 2010, 43 (02) :1083-1092
[10]   Simple and Versatile Methods To Integrate Directed Self-Assembly with Optical Lithography Using a Polarity-Switched Photoresist [J].
Cheng, Joy Y. ;
Sanders, Daniel P. ;
Truong, Hoa D. ;
Harrer, Stefan ;
Friz, Alexander ;
Holmes, Steven ;
Colburn, Matthew ;
Hinsberg, William D. .
ACS NANO, 2010, 4 (08) :4815-4823