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Charged States and Band-Gap Narrowing in Codoped ZnO Nanowires for Enhanced Photoelectrochemical Responses
Charged States Band-Gap Narrowing Codoped ZnO Nanowires Enhanced Photoelectrochemical Responses
2012/2/27
By means of first-principles calculations within the density functional theory, we study the structural and optical properties of codoped ZnO nanowires and compare them with those of the bulk and film...
First principles investigation of Bi$_6$Ti$_4$O$_{17}$: oxide ferroelectricity with a low band gap
First principles investigation low band gap
2010/11/25
We report first principles studies of the hypothetical compound Bi6Ti4O17, which is an alternate stacking of the ferroelectric Bi4Ti3O12. We find that this compound is ferroelectric, similar to Bi4Ti3...
Direct observation of band-gap closure for a semiconducting carbon nanotube in a large parallel magnetic field
Direct observation of band-gap closure semiconducting carbon nanotube large parallel magnetic field
2010/11/23
We have investigated the magnetoconductance of semiconducting carbon nanotubes (CNTs) in
pulsed, parallel magnetic elds up to 60 T, and report the direct observation of the predicted band-gap closur...