Anomalous Optical Properties of InN Nanobelts: Evidence of Surface Band Bending and Photoelastic Effects


  • This work was supported by the National Science Council of the Republic of China.


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The properties of high-quality InN nanobelts fabricated by the metal-organic chemical vapor deposition technique are investigated. The figure shows the uniaxial strain ϵ3 (, solid squares) and in-plane strain ϵ1 (solid circles) as a function of excitation intensity. The reduction of the tensile in-plane strain gives rise to a noticeable increase of the band gap energy.