Samsung Working on Making Graphene Compatible With Silicon-Based Semiconductor Processes

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  • The work includes a newly discovered material, called amorphous boron nitride (a-BN) which consists of boron and nitrogen atoms

Researchers at the Samsung Advanced Institute of Technology (SAIT) have unveiled the discovery of a new material, called amorphous boron nitride (a-BN), in collaboration with Ulsan National Institute of Science and Technology (UNIST) and the University of Cambridge. Published in the journal Nature, the study has the potential to accelerate the advent of the next generation of semiconductors.

“To enhance the compatibility of graphene with silicon-based semiconductor processes, wafer-scale graphene growth on semiconductor substrates should be implemented at a temperature lower than 400°C. We are also continuously working to expand the applications of graphene beyond semiconductors,” said Hyeon-Jin Shin, a graphene project leader and Principal Researcher at SAIT.

In addition to researching and developing graphene, SAIT has been working to accelerate the material’s commercialization.

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Amorphous boron nitride (a-BN)

The newly discovered material, called amorphous boron nitride (a-BN), consists of boron and nitrogen atoms with an amorphous molecule structure. While amorphous boron nitride is derived from white graphene, which includes boron and nitrogen atoms arranged in a hexagonal structure, the molecular structure of a-BN in fact makes it uniquely distinctive from white graphene.

Amorphous boron nitride has a best-in-class ultra-low dielectric constant of 1.78 with strong electrical and mechanical properties, and can be used as an interconnect isolation material to minimize electrical interference. It was also demonstrated that the material can be grown on a wafer scale at a low temperature of just 400°C. Thus, amorphous boron nitride is expected to be widely applied to semiconductors such as DRAM and NAND solutions, and especially in next generation memory solutions for large-scale servers.

“Recently, interest in 2D materials and the new materials derived from them has been increasing. However, there are still many challenges in applying the materials to existing semiconductor processes. We will continue to develop new materials to lead the semiconductor paradigm shift,” said Seongjun Park, Vice President and Head of Inorganic Material Lab, SAIT.

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