[1] [1] Skumanich A. Optical absorption spectra of carbon 60 thin films from 0.4 to 6.2 eV [J]. Chem. Phys. Lett, 1991, 182:486

[3] [3] Hebard A F, Rosseinsky M J, Haddon R C et al. Superconductivity at 18K in potassium-doped C6o [J]. Nature, 1991,350:600

[4] [4] Rosseinsky M J, Ramirez A P, Glarum S H et al. Superconductivity at 28K in RbxC60 [J]. Phys. Rev. Lett., 1991,66:2830

[5] [5] Holczer K, Klein O, Huang S M et al. Alkali-fulleride Superconductors: Synthesis, Composition, and Diamagnetic Shielding [J]. Science, 1991, 252:1154

[6] [6] Hisashi Sekine, Hiroshi Maeda, Michio Kosug et al. Magnetic behavior and structure of the halogn-doped fullerene C60 [J]. J. Appl, Phy., 1992, 72:5448

[7] [7] Zenner Th, Zabel H. Synthesis, Characterization, and Stability of C6oI2 [J]. J. Phys. Chem., 1993, 97:8690

[8] [8] Song L W, Fredett K T, Chung D D L et al. Superconductivity in interhalogen-doped fullerene [J]. Solid state Commun., 1993, 87:387

[9] [9] Miyamoto Y, Oshiyama A, Saito S. Halogen doping in solid C60 [J]. Solid state Commun., 1992, 82:437

[10] [10] Chen Jun, Wei Aixiang, Zhang Haiyan et al. Low field induced electrical emission thenomenon observed from the carbon containing thin film [J]. Chin. Phys. Lett., 1997, 14:949

[11] [11] Kelly M K, Etchegoin P, Fuchs D. Optical transitions of C60 films in the visible and ultraviolet from spectroscopic ellipsometry [J]. Physical Review B, 1992, 46(8): 4963

[12] [12] Pankove J I. Optical Processes in Semiconductors [M]. New york: Dover Publications Inc., 1975. Chapter 6

[13] [13] Ke N, Cheung W Y, Wong S P et al. Electrical and defect properties of Sn-doped C60 thin film [J]. Carbon, 1997,6:759-762