Electric conductivity enhancement and laser-induced formation of (KCn)− in K+ ion implanted C60 films

✍ Scribed by Yunlong Cui; Senhao Lin; Tingwen Rong; Jingrong Bao; Lansun Zheng; Chaoyang Liu

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 413 KB
• Volume: 227
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)00891-4

✦ Synopsis

Pristine CsO films, which were sublimed onto Si( loo), were implanted with 20 keV K+ ions at a dose of 2.7x 1016/cm2. The distribution of K+ and contamination of oxygen were studied using Rutherford backscattering. The four-probe technique was used to measure the sheet resistance of the films, and the fit of the conductivity versus temperature was found to satisfy the variable range hopping model. Laser-induced mass spectra of both positive and negative cluster ion were presented. The clusters (KC60)-, (K&)-and (KC64)-were found.