Hall, C. R.; Dao, Lap Van; Koike, K.; Sasa, S.; Tan, H. H.; Inoue, M.; Yano, M.; Jagadish, C.; Davis, J. A.
Quantum wells with graded barriers are demonstrated as a means to control both the transition energy and electron-hole wave function overlap for quantum wells with an intrinsic internal electric field. In the case of c-axis grown ZnO/ZnMgO quantum wells, the graded barriers are produced by stepping the magnesium composition during the growth process. Four quantum wells with different structures are examined, where each well has similar transition energy, yet a wide range of wave function...[Show more]
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