Color-conversion efficiency enhancement of quantum dots via selective area nano-rods light-emitting diodes | Zendy

Che-Yu Liu | Zendy; Tzu-Pei Chen | Zendy; Tsung Sheng Kao | Zendy; Jhih-Kai Huang | Zendy; HaoChung Kuo | Zendy; YangFang Chen | Zendy; ChunYen Chang | Zendy

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Color-conversion efficiency enhancement of quantum dots via selective area nano-rods light-emitting diodes

Author(s) -

Che-Yu Liu,

Tzu-Pei Chen,

Tsung Sheng Kao,

Jhih-Kai Huang,

HaoChung Kuo,

YangFang Chen,

ChunYen Chang

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.019978

Subject(s) - light emitting diode , materials science , electroluminescence , optoelectronics , quantum dot , nanorod , quantum efficiency , photoluminescence , diode , energy conversion efficiency , color rendering index , photolithography , nano , optics , nanotechnology , physics , layer (electronics) , composite material

A large enhancement of color-conversion efficiency of colloidal quantum dots in light-emitting diodes (LEDs) with novel structures of nanorods embedded in microholes has been demonstrated. Via the integration of nano-imprint and photolithography technologies, nanorods structures can be fabricated at specific locations, generating functional nanostructured LEDs for high-efficiency performance. With the novel structured LED, the color-conversion efficiency of the existing quantum dots can be enhanced by up to 32.4%. The underlying mechanisms can be attributed to the enhanced light extraction and non-radiative energy transfer, characterized by conducting a series of electroluminescence and time-resolved photoluminescence measurements. This hybrid nanostructured device therefore exhibits a great potential for the application of multi-color lighting sources.

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