Photo-dember effect
WebNov 15, 2013 · Dember effect: Problems and solutions. In the existing theory of Dember effect research community understands that the photo-electromotive force is the voltage … WebIn semiconductor physics, the photo–Dember effect is the formation of a charge dipole in the vicinity of a semiconductor surface after ultra-fast photo-generation of charge …
Photo-dember effect
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Web(A) Schematic of the photo-Dember effect on metals. (B, C) Simulations of the charge distribution on a silver slab (D). (B) Electron density (n) distribution in x directions generated by ... WebThe photo-Dember effect arises from the asymmetric diffusivity of photoexcited electrons and holes, which creates a transient spatial charge distribution and hence the buildup of a voltage. Conventionally, a strong photo-Dember effect is only observed in semiconductors with a large asymmetry between the electron and hole mobilities, such as in GaAs or InAs, …
WebMay 6, 2024 · The photo-Dember effect is the transient current caused by the difference between the mobility or diffusion constants of electrons and holes. When the laser pulses excite the sample, photogenerated electrons and holes are localized near the interface and share the center of mass. Because electrons and holes diffuse away from the interface at ... WebSep 14, 2015 · This option allows users to search by Publication, Volume and Page Selecting this option will search the current publication in context. Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the Publisher/Society in context
WebJan 4, 2024 · Dember effect is a potential mechanism for realizing self-driving photodetection. Unfortunately, both the optoelectronic prediction and the experimental realization of the Dember photodetectors ... Webther, the photo-Dember effect becomes the dominant mecha-nism. We note that the polarity of the terahertz emission from both n-InMnAs and p-InMnAs at low temperature is the same as the polarity of the terahertz emission from p-InAs. This is consistent with the above description in which the emission mechanism is the same i.e., the photo-Dember ef-
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WebThe photo dember effect was discovered by Harry Dember in 1925. The whole effect happens due to two excitations happening by two different electrons, one due to photonic … switch64 追加WebThe photo-Dember effect arises from the asymmetric diffusivity of photoexcited electrons and holes, which creates a transient spatial charge distribution and hence the buildup of a … switch64位驱动WebAug 28, 2014 · The photo-Dember effect is a source of pulsed THz emission following femtosecond pulsed optical excitation. The emission results from the ultrafast spatial … switch 6507228WebMay 20, 2014 · We demonstrate a terahertz multiple emitter design based on the lateral photo-Dember effect and illuminated with a cylindrical … switch 6560WebJun 28, 2016 · The photo-Dember effect for solar fuel generation has also been studied. For example, Chen et al. demonstrated a three-dimensional silver structure with a visible-lightresponsive photo-Dember ... switch666WebThe Photo–Dember effect. Main article: Photo-Dember effect. When photogenerated electrons and holes have different mobilities, a potential difference can be created between the illuminated and non-illuminated faces of a semiconductor slab. switch 6509WebJul 6, 2024 · Liu, C. H. et al. Ultrafast lateral photo-Dember effect in graphene induced by nonequilibrium hot carrier dynamics. Nano Lett. 15 , 4234–4239 (2015). CAS Google Scholar switch 65