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Rainbow Emission from an Atomic Transition in Doped Quantum Dots.
Hazarika, Abhijit; Pandey, Anshu; Sarma, D D.
Afiliação
  • Hazarika A; †Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
  • Pandey A; †Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
  • Sarma DD; †Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
J Phys Chem Lett ; 5(13): 2208-13, 2014 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-26279535
ABSTRACT
Although semiconductor quantum dots are promising materials for displays and lighting due to their tunable emissions, these materials also suffer from the serious disadvantage of self-absorption of emitted light. The reabsorption of emitted light is a serious loss mechanism in practical situations because most phosphors exhibit subunity quantum yields. Manganese-based phosphors that also exhibit high stability and quantum efficiency do not suffer from this problem but in turn lack emission tunability, seriously affecting their practical utility. Here, we present a class of manganese-doped quantum dot materials, where strain is used to tune the wavelength of the dopant emission, extending the otherwise limited emission tunability over the yellow-orange range for manganese ions to almost the entire visible spectrum covering all colors from blue to red. These new materials thus combine the advantages of both quantum dots and conventional doped phosphors, thereby opening new possibilities for a wide range of applications in the future.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: J Phys Chem Lett Ano de publicação: 2014 Tipo de documento: Artigo País de afiliação: Índia