Wu, Kong-Ping; Ye, Jiandong; Tang, Kun; Qi, Jian; Zhu, Shunming; Gu, Shulin
In this study the electronic structures and absorption coefficient for highly mismatched ZnTe<inf>1-x</inf>O<inf>x</inf> alloys have been investigated on the basis of the GGA+U approximation. It is found that an isolated intermediate band (E<inf>-</inf>) is formed within the band gap of ZnTe by the incorporation of low content of O (x < 0.0625) into ZnTe. In the range of the low O content, the variation of E<inf>-</inf> and E<inf>+</inf> is in agreement with the theoretical prediction by the...[Show more]
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