首页|Reanalysis of energy band structure in the type-Ⅱ quantum wells
Reanalysis of energy band structure in the type-Ⅱ quantum wells
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Band structure analysis holds significant importance for understanding the optoelectronic characteristics of semicon-ductor structures and exploring their potential applications in practice.For quantum well structures,the energy of carriers in the well splits into discrete energy levels due to the confinement of barriers in the growth direction.However,the discrete energy levels obtained at a fixed wave vector cannot accurately reflect the actual energy band structure.In this work,the band structure of the type-Ⅱ quantum wells is reanalyzed.When the wave vectors of the entire Brillouin region(corre-sponding to the growth direction)are taken into account,the quantized energy levels of the carriers in the well are replaced by subbands with certain energy distributions.This new understanding of the energy bands of low-dimensional structures not only helps us to have a deeper cognition of the structure,but also may overturn many viewpoints in traditional band theories and serve as supplementary to the band theory of low-dimensional systems.
energy band structuretype-Ⅱ quantum wellslow-dimensional semiconductors
李欣欣、邓震、江洋、杜春花、贾海强、王文新、陈弘
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Key Laboratory for Renewable Energy,Beijing Key Laboratory for New Energy Materials and Devices,Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China
Center of Materials and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China
The Yangtze River Delta Physics Research Center,Liyang 213000,China
Songshan Lake Materials Laboratory,Dongguan 523808,China
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国家自然科学基金国家自然科学基金中国科学院战略规划重点项目Youth Innovation Promotion Association Chinese Academy of Sciences
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