Issue



Table of Contents

Solid State Technology

Year 2005
Issue 7

DEPARTMENTS

Editorial


The urgent need for process collaboration

Makers of advanced microchips have been doing a magnificent job of bringing 300mm wafer fabs on stream and ramping to even better yields than they had hoped for as they moved from 130nm to 90nm.


World News


World News


Tech News


Technology News


Feol


Chemistry and process challenges in advanced materials processing

The push of leading-edge manufacturing technologies toward sub-0.1μm feature sizes places extreme performance demands on manufacturing processes and equipment.


Compound Semiconductors


Wafer manufacturing issues for III-V optoelectronics

Optoelectronic devices using III-V compound semiconductor materials are increasingly central to optical communications.


Mems


Fabrication and assembly of 3D MEMS devices

The ability to integrate mechanical elements with supporting electronics on a micro scale has bolstered microelectromechanical systems (MEMS) as an enabling technology, sparking interest in an impressive range of applications.


Product News


Semicon West 2005 Product Panorama


Perspectives


DFM issues new rules for IDMs, foundries

Solid State Technology asked industry execs to comment on the proliferation of DFM solutions and their integration into the product flow.


FEATURES

Gate Stack Engineering


Meeting challenges for engineering the gate stack

Precise interfacial layer control and film compositional control are needed to extend SiON layers with high nitrogen content for 32nm node high-performance (HP) logic devices, as well as when Hf-based films at the 65nm node are introduced for low standby-power (LSTP) logic devices.


Metrology


Introduction of stress requires stress metrology methods

Although stress has been used to increase carrier mobility for the past several years, its measurement and control have also proven difficult.


Metrology


Development to manufacturing using integrated scatterometry

Integrated scatterometry will be an essential part of the monitoring and control in product manufacturing at the 65nm node and beyond.


Contamination Control


Organic growth on pattern side of reticles gives rise to new progressive mask defects

Unexplained progressive mask defects continue to plague and puzzle semiconductor manufacturers.


Materials


Options at the 45nm node include engineered substrates

Compatibility with existing design methodology dictates the continued use of planar transistors at the 45nm technology node.


Vacuum Technology


Data collection and networking capabilities enable pump predictive diagnostics

Predictive diagnostics techniques are applied to networked vacuum systems in wafer-processing applications using an array of data collection, mining, and advanced analysis concepts.


Implantation


S/D extension formation for sub-65nm transistors

The increasing demand for high-performance computers and the widespread use of more complex consumer products continue to fuel the scaling of leading-edge logic devices.


Gases Gas Handling


Removal of metal carbonyl and moisture impurities through POU purification of CO gas

An elaborate testing methodology is used to study the impurity removal characteristics of point-of-use carbon monoxide gas purifiers.


Cmp


Improving yield at 65nm using Cu thickness monitoring and control

The dual-damascene process used to create copper interconnect exhibits nonuniformities in both Cu deposition and removal rates that, if not closely controlled, result in structures of varying thickness or unwanted residual material on the wafer surface.