ENGRI1110_Lect27_Nov2_posted - Engineering Majors...

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Engineering Majors Information Fair Today from 4:00 - 5:30 PM Duffield Hall Atrium
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Spring Course: MS&E 1810. Materials Science & Engineering at Cornell: An Introduction for Freshmen (MS&E 1810) Lunchtime seminar format-Bring a sandwich! 1 credit, S/U or letter Tuesdays 12:20-1:10 (can be adjusted, send me an email) Introduces materials science and engineering to students considering MS&E as their major. Topics covered: Tours of Cornell centers and MS&E facilities
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Materials: Enabling the Future of Energy MSE1140 / ENGRI 1140 Spring 2010 MWF 1:25-2:15 Labs: M,TR, or F 2:30-4:30 Experiential learning the lab is integral to the course lab: build and evaluate a Li-ion battery synthesize ceramic Li compounds construct battery (graphite anode, non- aqueous electrolyte, quartz felt separator) build test system evaluate structure/performance Materials properties typically limit the performance that can be achieved in generation, transport, and utilization of energy. New technologies are urgently needed to fulfill projected global energy requirements . LED lighting Lithium-ion battery
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New Carbon Forms New Carbon Forms Buckyballs and nanotubes Ch. 12.4, p. 399-403
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Buckyballs Buckyballs 12 pentagons 20 hexagons Each pentagon surrounded by 5 hexagons ~1 nm in diameter 0.138 nm 0.145 nm
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Applications Applications www.eng.cam.ac.uk/~cd229/ Nature, 407, 57, 2000 STM Image of C 60 C 60 Transistor
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High density of p-n junctions: more area for light absorption Efficiency increased of 2-3 order of magnitude reaching 1% •Separate conduction path for electron and holes (like in DSSC). Buckyballs in Photovoltaics Buckyballs in Photovoltaics P3HT PCBM
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Conductive polymer It is a e - donor Hole transport material Functions like p-type The P3HT - PCBM system PCBM C 60 derivative It is a e - acceptor Electron transport material Functions like n-type
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This note was uploaded on 02/10/2010 for the course ENGRI 1110 at Cornell University (Engineering School).

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ENGRI1110_Lect27_Nov2_posted - Engineering Majors...

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