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对气相法生长的Ｃ６０单晶和薄膜、液相法生长的Ｃ６０单晶、Ｃ６０与Ｓ的化合物单晶的光热偏转谱（ＰＤＳ）进行了研究，并与非晶半导体的ＰＤＳ进行了比较．用Ｔａｕｃ公式确定了各种样品的光学带隙．计算了Ｕｒｂａｃｈ吸收边．讨论了Ｃ６０固体的弱吸收特性
The photothermal spectra (PDS) of C60 single crystal and thin film grown by vapor phase method, C60 single crystal grown by liquid phase method, single crystal of C60 and S compound were studied and compared with PDS of amorphous semiconductor. The optical bandgaps for various samples were determined using the Tauc formula. Urbach absorption edge is calculated. The weak absorption properties of C60 solid are discussed