研究期間：10101~10112;The conversion efficiency of a single junction solar cell with an intermediate band in the bang gap theoretically could be higher than that of a triple-junction solar cell by expanding the absorption spectrum without sacrificing the open-circuit voltage. Introducing O to ZnSe could generate an intermediate band in the band gap. Tunable band gap can also be achieved by changing its O content. These properties make ZnSe-based dilute oxides very attractive in solar cell application. According to our previous study, high quality ZnSeO can be grown on GaAs under specific growth conditions. In this work, we will focus on the growth and characterization of intermediate band ZnSeO heterostructures. ZnSeO solar cells will be designed and fabricated for the first time.