کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1861353 1037507 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Strain-induced structural and direct-to-indirect band gap transition in ZnO nanotubes
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Strain-induced structural and direct-to-indirect band gap transition in ZnO nanotubes
چکیده انگلیسی

First-principles calculations have been employed to investigate the structural transformation and direct to indirect band gap transition of ZnO nanotubes under uniaxial strain. The results show that armchair and zigzag nanotubes can be transformed to each other via unusual fourfold-coordinated structures under the applied strain. Both the armchair and zigzag nanotubes exhibit direct band gap while the unusual fourfold-coordinated ones display indirect band gap. The origin of such a direct-to-indirect band gap transition is explained based on the analyses of atomic orbital contributions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 374, Issue 28, 21 June 2010, Pages 2846–2849
نویسندگان
, , , ,