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cond-mat.mtrl-sci2016★ 15 cited
Direct band gap carbon superlattices with efficient optical transition
Young Jun Oh, Sunghyun Kim, In-Ho Lee +2
We report pure carbon-based superlattices that exhibit direct band gaps and excellent optical absorption and emission properties at the threshold energy. The structures are nearly…
cond-mat.mtrl-sci2015
Dipole-Allowed Direct Band Gap Silicon Superlattices
Young Jun Oh, In-Ho Lee, Sunghyun Kim +2
Silicon is the most popular material used in electronic devices. However, its poor optical properties owing to its indirect band gap nature limit its usage in optoelectronic device…