Silicon is the new black

by Kris_Tuttle on May 11, 2007

MEMC (WFR — $54) has been in the news lately thanks to its recent quar­terly report, which was — just as expected — send­ing the stock down nearly 20%. It was thanks to the researchers at MIT that we dis­cov­ered some­thing spe­cial about sil­i­con described in our Feb­ru­ary 6, 2006 report. We high­lighted “fast sil­i­con” and the obvi­ous invest­ment play MEMC, which at the time was chang­ing hands at $28/share. WFR duti­fully climbed to $67 over the sub­se­quent 14 months. Admit­tedly most of the enthu­si­asm from MEMC is as a sup­plier to the boom­ing mar­ket for solar energy. How­ever, our the­sis was and is based on con­tin­ued sec­u­lar increases in demand for sil­i­con and the increas­ing value-add pos­si­ble at the wafer level. Sil­i­con is by far the lead­ing mate­r­ial for mak­ing semi­con­duc­tors. It has allowed phe­nom­e­nal increases in den­sity and offers very low power dis­si­pa­tion. How­ever sil­i­con has one sig­nif­i­cant draw­back. Turns out that elec­trons move fairly slowly in sil­i­con vs. other mate­ri­als such as gal­lium arsenide. Engi­neers have been forced to make a trade-off between high-speed/high power con­sump­tion mate­ri­als and slower, more effi­cient sil­i­con. Obvi­ously there is strong desire to have the best of both worlds — high speed and lower power dis­si­pa­tion. By chang­ing the lat­tice struc­ture of sil­i­con by a frac­tion of an angstrom, elec­tron mobil­ity is improved ten­fold. The basic fact is that by turn­ing raw sil­i­con wafers into highly engi­neered sub­strates, great advan­tages can be cre­ated and con­se­quently increase the value added by a sup­plier like MEMC. Most view MEMC as a com­mod­ity play on what has been a tight mar­ket for sil­i­con sup­ply. It’s true that these con­di­tions cre­ate an even bet­ter short-term story for MEMC, but to us the longer-term oppor­tu­ni­ties in more engi­neered prod­ucts is far more inter­est­ing. We know:

  • There are big com­peti­tors out there.
  • That mar­ket prices for sil­i­con will be volatile.
  • And that other, even more advanced tech­nolo­gies, could replace sil­i­con in the very long-term.

How­ever, we also know the oppor­tu­ni­ties in sil­i­con for MEMC are at least as good as those in other parts of the semi­con­duc­tor value chain with less com­pe­ti­tion and real switch­ing costs in the more com­plex seg­ments of the mar­ket. – Kris Tuttle

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