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xiaojun890(½ð±Ò+1): 2010-11-24 15:22:51
yunruirui(½ð±Ò+1):лл²ÎÓë 2010-11-24 22:10:27
The relationship between the absorption coefficient ( ) and the photon energy ( ) can be written as shown in Eq. (1) [22]:
                        (1)
Where B is the constant related to the effective masses associated with the valence and conduction bands, Eg is the band gap energy, E=  is the photon energy, respectively. Fig. 4a shows the absorption spectrum of the as-synthesized TiO2 beads (sample S4). The inset shows the plots of ( )2 versus the ( ). Eg for the as-synthesized TiO2 beads can be calculated by extrapolating the linear portion of ( )2 versus the ( ) plot to  =0.
5Â¥2010-11-24 13:09:14
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yongxa

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wandaohzl:¹ÄÀø½»Á÷ 2010-11-24 13:09:43
xiaojun890(½ð±Ò+3): 2010-11-24 15:22:33
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charley86577

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yunruirui:лл²ÎÓë 2010-11-24 22:10:33
nuaajsh(½ð±Ò+1):¹ÄÀø½»Á÷ 2010-11-24 22:31:43
xiaojun890(½ð±Ò+1): 2010-11-25 10:03:11
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[ Last edited by charley86577 on 2010-11-24 at 21:26 ]
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