Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Site Tools

  • AAAS
  • Subscribe
  • Feedback

Site Search

Search Advanced

Science 19 December 1997:
Vol. 278. no. 5346, p. 2027
DOI: 10.1126/science.278.5346.2027e
Prev | Table of Contents | Next

This Week in Science

Schottky diodes consist of a metal and a semiconductor and pass current in only a certain voltage range. In principle, the turn-on voltage should vary with the work function of the metal, but in practice the voltage is almost the same for different metals because of "pinning" to surface states. Lonergan (p. 2103; see the Perspective by Scott, p. 2071) shows that by using a conducting polymer as the metal, a tunable diode can be formed. Embedded in the polymer is a gold grid that can be used to dope the polymer electrochemically and change its work function.




ADVERTISEMENT
Click Me!

ADVERTISEMENT
Click Me!

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)