Formation of Fullerides and Fullerene-Based Heterostructures

doi:10.1126/science.253.5020.646

Account Information

Guest Alerts | Access Rights | My Account | Sign In

Site Navigation

Article Views

Article Tools

My Science

Science 9 August 1991:
Vol. 253. no. 5020, pp. 646 - 648
DOI: 10.1126/science.253.5020.646

Prev | Table of Contents | Next

Articles

Formation of Fullerides and Fullerene-Based Heterostructures

D. M. POIRIER ¹, T. R. OHNO ¹, G. H. KROLL ¹, Y. CHEN ¹, P. J. BENNING ¹, J. H. WEAVER ¹, L. P.F. CHIBANTE ², and R. E. SMALLEY ²

¹ Department of Materials Science and Chemical Engineering, University of Minnesota, Minneapolis, MN 55455
² Rice Quantum Institute and Departments of Chemistry and Physics, Rice University, Houston, TX 77251

Two potassium fulleride phases, metallic K₃C₆₀ and nonmetallicK₆C₆₀, are formed when potassium is incorporated into thin C₆₀films under ultrahigh vacuum conditions. Phase separation isobserved for intermediate stoichiometries. Results obtainedfor the C₆₀-K₃C₆₀ heterostructure demonstrate that it is stableagainst potassium migration from the K₃C₆₀ phase. In contrast,the C₆₀-K₆C₆₀ interface is not stable and K₃C₆₀ is formed.

Submitted on June 24, 1991
Accepted on July 10, 1991

THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:

Electrical Resistivity and Stoichiometry of Kkhgr C60 Films.: G. P. KOCHANSKI, A. F. HEBARD, R. C. HADDON, and A. T. FIORY (1992)
Science 255, 184-186
| Abstract » | PDF »

X-Ray Diffaction Evidence for Nonstoichiometric Rubidium-C60 Intercalation Compounds.: Q. ZHU, O. ZHOU, N. COUSTEL, G. B. M. VAUGHAN, J. P. MCCAULEY JR., W. J. ROMANOW, J. E. FISCHER, and A. B. SMITH III (1991)
Science 254, 545-548
| Abstract » | PDF »