Controlled integration of nanocrystals in inverted hexagonal nano-pits at the surface of light-emitting heterostructures

resumo

Spontaneously formed nano-pits are exploited to effectively control the incorporation of gold nanocrystals (NCs) at the surface of light emitting InGaN/GaN heterostructures. Nanoengineering either the NCs size, or pit size, allows the number of NCs incorporated in each pit to be controlled, thus enabling research of well-defined assemblies of few gold NCs using an optically and electrically active substrate (see figure). The development of new nano-devices based on such hybrid nanostructures is briefly discussed.

palavras-chave

QUANTUM-WELLS; LASER-DIODES; DEVICES; NANOPARTICLES; EPILAYERS; DEFECTS; GOLD; GAN

categoria

Chemistry; Science & Technology - Other Topics; Materials Science; Physics

autores

Pereira, SMD; Martins, MA; Trindade, T; Watson, IM; Zhu, D; Humphreys, CJ

nossos autores

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