Slide 1Team MembersTeam ResponsibilitiesGroup MotivationOverviewKey SpecificationsTimelineSystem ComponentsMask LayoutSensorPrototype LayoutDesign EquationsSiC Plot of Resistance vs. TemperatureController BoardCost AnalysisConclusions/Future WorkSlide 17Silicon CarbideTemperature Sensorfor Harsh EnvironmentsChris Rice Jason WallaceMichael Jackson Jovan BjelobrkADVISORDr. Stephen Saddow“a hot project…a cool advisor”Team MembersTeam ResponsibilitiesJovan BjelobrkJason WallaceMichael JacksonChris RiceProject Planning/CoordinationSensor DesignFabricationSensor DesignDocumentationSoftware/Web DesignDocumentationDevice Controller DesignGroup MotivationResearch of New SystemResearch of New Materials in Semiconductor TechnologyWithin our Realm of CapabilityOverviewNo reliable way to detect temperature changes in extreme environments using typical semiconductor material (Si)Space travel involves extreme temperaturesSiC has the ability to operate in and withstand extreme temperatures (>500 °C)Key Specifications Increased Sensing Range 25 ° C to 500 ° C Operating Voltage 5 volts to 24 volts Tolerance Temperature reading accuracy of 0.5 °C at 25 °CTimelineFebruary March April MayHardwareSoftwarePerformance TestingTroubleshootingFinished ProductSystem Components•Temp. Sensing•Voltage Output•A/D Conversion•Serial Interface•Temp. Display•Advanced FunctionsActual Pictures will be here!!Mask LayoutSensorPrototype Layoutp+ n-Metal Contactsn+ n+Doping Levels 1x1018 5x1015 Design EquationsR = *(L/A) A = W*t = 1/(n*q*n)Ni = sqrt(nc*nd)*e(-Eg/2*k*T)n = (2.5*107)*T-2SiC Plot of Resistance vs. TemperatureTest Spec of 25 to 500 degrees C0 50 100 150 200 250 300 350 400 450 5000123456x 104Temperature [C]Resistance [Ohms]TheoreticalMeasuredController BoardActual Picture will go hereCost AnalysisApproximately $2000 per substrate (2 inch diameter wafer)Approximately $600 for whole-wafer EPI GrowthApproximately $400 for Fabrication RunProducing 24 cells per wafer, and assuming overall yield of process of 72%, produces 120 usable devices at approximately $25 eachControl board components: $26.61Total cost for working unit: $51.61Utilization of MATLAB for simulations of SiC device and controller board circuitryDetermine the PSpice models for SiC electronic componentsDesign will be later incorporated into a single MEMS device for determining temperature, pressure, and vibration from a single point on a space vehicleConclusions/Future WorkSilicon CarbideTemperature Sensorfor Harsh
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