27.01.2014 - (idw) Fraunhofer-Gesellschaft
European Research Consortium to Develop Simulation Tools, Materials and Processes to Enable Further Miniaturization of Nano-electronics Advanced simulation models and a computational framework for lithography-integrated directed self-assembly (DSA) of block copolymers will be developed within the European project CoLiSA.MMP. These software tools will aid the research and development of new materials, designs and process flows. By enhancing existing and future lithographic patterning techniques, DSA of block copolymers can help to further extend the impressive development in semiconductor technologies. Cost-efficient technologies for the miniaturization of patterns in semiconductor devices are key to the development of more powerful computers, mobile devices and many other types of consumer and industrial electronics. CoLiSA.MMP combines European expertise in soft matter physics, block copolymer chemistry, lithographic process and computational lithography.
For many technology generations, the miniaturization of semiconductor devices was enabled by evolutionary advancements in optical projection lithography. In the past, this was mainly achieved by the reduction of the wavelength or an increase of the numerical aperture (NA). Today with size requirements close to the physical limits, highly involved methods such as optical resolution enhancement techniques, source and mask optimization (SMO), double patterning and lithography-friendly design are required. Only with the help of these, can the downscaling pace of Moores law be maintained, allowing for technology nodes as small as 22 nanometers. The extension of optical lithography to even smaller dimensions will lead to a drastic increase in costs. Extreme ultraviolet (EUV) lithography, at a wavelength of 13.5 nanometers for example, promises a revival of wavelength-driven scaling. Because of major unresolved obstacles associated with the source power and stability and the mask infrastructure, the introduction of EUV has been repeatedly postponed. Directed self-assembly (DSA) of block copolymers offers an alternative approach to scaling. It employs nanophase separation between covalently bound chemically different monomers. In contrast to traditional, increasingly difficult and expensive optics-driven top-down technologies, DSA uses a cost-efficient material-driven bottom-up technique, permitting structures of 10 nanometers and below.
Two challenges still impede an industry-grade application of DSA: 1st, the host substrate strongly impacts DSA. The resulting pattern formation must be understood and modeled exactly in order to optimize its efficiency and to circumvent defects. 2nd, the specific properties of DSA must be considered early during the design stage. Within CoLiSA.MMP novel material and process models and a computational lithography framework for DSA will be developed. The combination of advanced, tailored atomistic and coarse-grained models and a series of complementary experiments, serves as the foundation for the development of highly efficient reduced models that seamlessly integrate into the lithographic process simulation. The new modeling facilities will be used to establish advanced design flows, which account for both the lithographic generation of guiding patterns and the patterns resulting from DSA. By posing the design problem as an inverse one, lithographically manufacturable guiding patterns and process conditions for given target structures can be precisely predicted and at a very early stage. Computational lithography will be also used to investigate the root causes of DSA-specific defects and to propose strategies to avert or mitigate them.
On November 19 and 20, 2013, Fraunhofer IISB in Erlangen, Germany, hosted the kick-off meeting for the 3-year project, which has a total budget of 4.91 million Euros.
CoLiSA.MMP is funded by the European Union in the 7th Framework Programme, under the ICT project number 619793.
Contact Dr. Andreas Erdmann Fraunhofer IISB Schottkystrasse 10, 91058 Erlangen, Germany Tel. +49-9131-761-258 Fax +49-9131-761-212 info@colisa.eu
Fraunhofer IISB The Fraunhofer Institute for Integrated Systems and Device Technology IISB is one of 66 institutes in the Fraunhofer-Gesellschaft. Here, applied research and development is carried out in micro- and nano-electronics, power electronics and mechatronics. With a staff of 180 employees, the institute is committed to contract research for industry and public authorities.
Fraunhofer IISB is internationally recognized for the development of technology, equipment, and materials for nano-electronics and its work on power electronic systems for energy efficiency, hybrid and electric cars.
In addition to its headquarters in Erlangen, the IISB maintains two branch laboratories in Nuremberg and Freiberg.
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Simulations to enable novel lithographic patterning techniques
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