IMEC starts new research activities on resistive RAM

– In order to explore solutions to overcome the scaling limitations of conventional Flash memory cells, IMEC has started new research activities on resistive RAM (RRAM) cells. With these activities, IMEC answers the needs of today’s major memory companies.

Resistive switching memories are based on materials whose resistivity can be electrically switched between high and low conductive states. RRAM is becoming of interest for future scaled memories because of their superior intrinsic scaling characteristics compared to the charge-based Flash devices, and potentially small cell size (enabling dense crossbar RRAM arrays using vertical diode selecting elements). RRAM is seen as a potential candidate to replace conventional Flash memory and hence to push NVM technology towards the (sub-)22nm technology node.

For making such RRAM, different concepts and materials are proposed. IMEC’s research activities on RRAM mainly focus on investigating the switching behavior of the RRAM cell concept that uses metal oxides as a switching element, and on demonstrating its scaling capability down to 25nm. The study concentrates on three main topics, being RRAM stack optimization (including the choice of top and bottom electrode and of the metal oxide), RRAM cell scaling and RRAM integration in a crossbar RRAM array.

These new research activities are part of IMEC’s Emerging Memory program that provides innovative non-volatile memory (NVM) technology, concepts and solutions for the 32nm generation and below. Besides activities on RRAM, IMEC also started to explore floating body cells (FBCs) for embedded and stand-alone DRAM and SRAM replacement. With these activities, IMEC answers the needs of today’s major memory industry players. IMEC’s vast background in NVM memory physics, reliability, modeling as well as process integration in state-of-the-art platforms and design and test issues, allows for these new concepts to be explored in a fast and cost-effective way.

About IMEC

IMEC is a world-leading independent research center in nanoelectronics and nanotechnology. IMEC vzw is headquartered in Leuven, Belgium, has a sister company in the Netherlands, IMEC-NL, offices in the US, China and Taiwan, and representatives in Japan. Its staff of more than 1600 people includes more than 500 industrial residents and guest researchers. In 2007, its revenue (P&L) was EUR 244.5 million.
IMEC’s More Moore research aims at semiconductor scaling towards sub-32nm nodes. With its More than Moore research, IMEC looks into technologies for nomadic embedded systems, wireless autonomous transducer solutions, biomedical electronics, photovoltaics, organic electronics and GaN power electronics.
IMEC’s research bridges the gap between fundamental research at universities and technology development in industry. Its unique balance of processing and system know-how, intellectual property portfolio, state-of-the-art infrastructure and its strong network worldwide position IMEC as a key partner for shaping technologies for future systems.
Further information on IMEC can be found at www.imec.be.