Rpt_Lab 7. Bandgap Measurement

Rpt_Lab 7. Bandgap Measurement - Materials Engineering 153...

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Materials Engineering 153 LabNotes Rev. F07 Writing Assignment - Long Engineering Report with Cover Letter Lab 7. Bandgap Measurement 1. Your Firm Your firm, SemiTech, makes various semiconductor devices. To become more vertically integrated 1 , SemiTech started a subsidiary company called SemiGap Engineering, located in another part of the country. The subsidiary processes raw gallium arsenide (GaAs) and gallium phosphide (GaP) to produce wafers. They purchase refined material, and processes it by melting, and drawing into single crystal GaAs and GaP ingots, and cutting them into wafers. 2. Your Job You are a process engineer with SemiTech. Since using the new wafers, your devices have not been working properly. You suspect that someone in SemiGap has been shipping the wrong wafers or mixing up the labels, so you test a sample wafer to determine its bandgap. The testing method is described in Lab Notes Chapter 7. 3. The Assignment
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Rpt_Lab 7. Bandgap Measurement - Materials Engineering 153...

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