Charge state switching of Cu acceptors in ZnO nanorods

• Published in: Applied physics letters Vol. 110; no. 12
• Main Authors: Rahman, M. Azizar, Westerhausen, Mika T., Nenstiel, Christian, Choi, Sumin, Hoffmann, Axel, Gentle, Angus, Phillips, Matthew R., Ton-That, Cuong
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 20.03.2017
• Subjects: Applied physics; Charge transfer; Computer simulation; Copper; Fine structure; Nanorods; Optical properties; Valence band; Zinc oxide

Undoped and Ga-doped ZnO nanorods both exhibit an intense green luminescence (GL) band centered at ∼2.4 eV. Unlike the defect-related GL in undoped nanorods, the GL band in Ga-doped nanorods displays a periodic fine structure separated by 72 meV, which consists of doublets with an energy spacing of...