11.+Thin+film+a-S

11.+Thin+film+a-S - MSE 302 Lecture 11 April 25, 2008 Thin...

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MSE 302 April 25, 2008 Lecture 11 Thin film solar cells and amorphous silicon
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Total PV market CAGR: 35% Thin film market CAGR: 51% 2000 2001 2002 2003 2004 2005 2006 2007 8% 12% 6% 5% 4% 3% 4% 4% Thin Film PV c Si PV 4000 3000 2000 1000 0 Total Production (MW p ) a Si 55% CdTe 40% CIGS 5% Worldwide Thin Film vs. c-Si Market Share
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National Venture Capital Association Solar Venture Backing by Technology ($millions) 2006
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What is “Thin Film” c-Si is 200-300 um 0.1-8 um
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“Generation I” : crystalline or poly crystalline Si “Generation II” : thin film Martin Green, UNSW aka “Generation II”
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Why thin film? Cheap: – Less material: ~0.1-3 μ m thick • can use lower quality material • faster energy pay back time • need strong absorption Æ need direct band gap or light trapping schemes – Deposited at moderate temperatures on cheap substrates (glass, plastic, steel foil) • Potentially high throughput, roll-to-roll…but necessarily amorphous or polycrystalline Æ
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11.+Thin+film+a-S - MSE 302 Lecture 11 April 25, 2008 Thin...

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