Optical Anisotropy in InP String-like Aligned Quantum Dots
- Optical Anisotropy in InP String-like Aligned Quantum Dots
- Y Kim; 송진동; 한일기
- InP; Quantum Dots; Anisotropy; ZnMgO; Atomic layer deposition; Photoluminescence
- Issue Date
- Journal of the Korean Physical Society
- VOL 64, NO 11, 1697-1700
- InP quantum dots were grown by using the molecular beam epitaxy technique. The quantum dots were connected and composed a string-like one-dimensional structure in the [1-10] crystal direction due to the strain field along the  direction. Two prominent photoluminescence transitions from normal quantum dots and string-like one-dimensional structures were observed and showed strong optical emission anisotropy. Both peaks also showed blue-shifts while rotating the emission polarization from the [1-10] to the  direction. Such optical transition behaviors are the consequence of valence band mixing caused by the strain field along the  crystal direction.
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