Аннотация
Wide-bandgap (WBG) semiconductors are essential materials for making short-wavelength and transparent optoelectronic devices. However, a serious obstacle to realizing WBG semiconductor-based devices is their common doping asymmetry problem, i.e., a WBG semiconductor can be doped easily either p-type or n-type, but not both. This paper reviews the possible origins for doping asymmetry problems and updates our recent progress in searching for approaches to overcome the doping bottleneck in WBG semiconductors. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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