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Figure 2831a shows the absorption coefficient of silicon (Si) at 300 K. Note that the band gap of Si is about 1100 nm. Figure 2831b shows the absorption coefficient of Cu2ZnSnSe4 at 300 K.
Figure 2831a. Absorption coefficient of silicon at 300 K.
Figure 2831b. The absorption coefficient of Cu2ZnSnSe4 at 300 K. Adapted from [1]
[1] Ji Li, Tuteng Ma, Ming Wei, Weifeng Liu, Guoshun Jiang, Changfei Zhu, The Cu2ZnSnSe4 thin films solar cells synthesized by electrodeposition route, Applied Surface Science 258 (2012) 6261– 6265.
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