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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Quantum electron beam probe of sidewall dry-etch damage

Rahman, M and Williamson, JG and Mathieson, K and Dick, G and Brown, MJ and Duffy, S and Wilkinson, CDW (2000) Quantum electron beam probe of sidewall dry-etch damage. Microelectronic Engineering, 53 (1-4). pp. 371-374. ISSN 0167-9317

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Abstract

Damage as a result of ion bombardment may occur both at top surfaces and at sidewalls. We propose a method of probing sidewall damage using coherent electron focusing. A collimated electron beam is reflected off an internal boundary formed by dry etching. Spectra measured in an applied magnetic field are influenced strongly by increased levels of etch damage. Monte Carlo simulations combined with experiments on multiple beams reveal the separate contributions of boundary roughness and inelastic electron scattering. Electrostatic calculations reveal a damage shadow beneath the sidewall.