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Temperature-dependent exciton-related transition energies mediated by carrier concentrations in unintentionally Al-doped ZnO films

Tang, Kun; Gu, Shulin; Ye, Jiandong; Huang, Shimin; Gu, Ran; Zhu, Shunming; Zhang, Rong; Shi, Yi; Zheng, Youdou


The authors reported on a carrier-concentration mediation of exciton-related radiative transition energies in Al-doped ZnO films utilizing temperature-dependent (TD) photoluminescence and TD Hall-effect characterizations. The transition energies of free and donor bound excitons consistently change with the measured TD carrier concentrations. Such a carrier-concentration mediation effect can be well described from the view of heavy-doping-induced free-carrier screening and band gap...[Show more]

CollectionsANU Research Publications
Date published: 2013-06-04
Type: Journal article
Source: Applied Physics Letters
DOI: 10.1063/1.4809669


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