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Thicker than 200 um

‘Lambertian’ light trapping. Thicker than 200 um. Si. t n. E c. E F. E v. E. Int. X. Dark. Recombination on interface states. Recombination on metallic contact. Quantum mechanical Electron tunneling effect. Thermal effect. Contacts resistance.

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Thicker than 200 um

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  1. ‘Lambertian’ light trapping Thicker than 200 um

  2. Si tn Ec EF Ev E Int. X Dark

  3. Recombination on interface states Recombination on metallic contact

  4. Quantum mechanical Electron tunneling effect Thermal effect

  5. Contacts resistance

  6. Auger recombination involves three particles: an electron and a hole, which recombine in a band-to-band transition and give off the resulting energy to another electron or hole. t for GaAs is of the order of tens of ns Heavy doping imposes an upper limit on lifetime according to tA = 1/CANA2, where tA is the Auger-limit lifetime. CA is the Auger coefficient

  7. Tyagi, M. S. and R. Van Overstraeten, Solid State Electron. 26, 6 (1983) 577-598.

  8. First silicon solar cell to achieve the milestone of 25 percent efficiency. University of New South Wales' ARC Photovoltaic Centre of Excellence. The growth in silicon production hasn't kept pace with the rise in solar power. "It takes about two or three years to add capacity". The shortage has been severe enough to drive up silicon prices to more than 10 times normal levels, to $450 a kilogram.

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