The bandgap energy of Ar gas C60 thin film is 2.24 eV, and the bandgap energy of N2 gas film is 2.09 eV. Both are larger than that of vacuum C60 thin films (2.02 eV).

• 用直接跃迁吸收边关系得出在氩气和氮气中制备的C60薄膜的禁带宽度分别为2.；24eV和2