2008年12月20日星期六

Solar Cell Simulation

Synopsys TCAD Seminar was held on 18 Dec 2008 in HKSTP. One of sessions was Solar Cell Simulation and the speaker was Mr. John Wang (Product Marketing Manager, Synopsys Taiwan Limited). I had summaries some points below.




TCAD is Technology CAD used computer simulation to model semiconductor process and device technologies. The current solar cell technologies are:
· Silicon-based Cells
- Crystalline silicon (c-Si)
- Multi-crystalline silicon (mc-Si)
- Amorphous silicon (a-Si)
· Compound Semiconductor
- Single and multi-junction: GaAs, InGaP
- CdTe
- CIGS: Cu(In, Ga)Se2
· Emerging Technologies
- Organic semiconductors
- Quantum well, dots, etc.

Using TCAD in Solar Cell Design can allow designers to optimize efficiency and enable virtual exploration of new cell designs. That process simulation can be applied to silicon-based solar cells. Some applications are shown as follows:
- Fe Concentration
- Advanced Geometric Modeling
- Solar Spectrum
- Anti-Reflection Coating (ARC) Optimization
- External / Internal Quantum Efficiency, etc.

Several research publication:
- Wyatt K. Metzger (2008) “The potential and device physics of interdigitated thin-film solar cells” Journal of Applied Physics, Vol 103
- J. Dicker, et al. (2002) “Analysis of one-sun monocrystalline rear-contacted silicon solar cells with efficiencies of 22.1%” Journal of Applied Physics, Vol 91
- P.S. Plekhanov, et al. (1999) “Modeling of gettering of precipitated impurities from Si for carrier lifetime improvement in solar cell applications” Journal of Applied Physics, Vol 86

Comments from Dr. Kitch Wilson in LinkedIn:

An industry accepted software suite used to simulate the semiconductor physics of a solar cell is available free. It is called PC1D and can be downloaded from: www.pv.unsw.edu.au/links/products/pc1d.asp

Also, a very good tutorial that covers some of the simulation equations can be found at http://pvcdrom.pveducation.org/index.html


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