L01-Introduction

L01-Introduction - Thin Films Goals Make electrical or...

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Thin Films
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Goals Make electrical or optical devices that are small cheap (process and materials) Make materials (textiles, engine blocks) more durable (protective coatings) stable (resist oxidation)
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One Solution … Make devices that consist of thin layers of various materials. Deposit thin layers of coatings to get the desired properties. The thickness of the layers can range from 10 nanometers to several micrometers.
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Examples of Devices Transistors, diodes, integrated circuits Photovoltaic cells Electrochromic devices Sensors LEDs
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Thin Film Transistors Many layers Doping Lithography Etching Metal contacts ITO for transparent contacts Nanotechnology 18 (2007) 195204 (5pp)
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The battery supplies the current (a flow of electrons). When electrons move they leave behind positively charged vacancies (holes). Electrons and holes
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This document was uploaded on 02/29/2012.

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L01-Introduction - Thin Films Goals Make electrical or...

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