Large Area Polymer Composite Films Embedded with Colloidal Quantum Dots for Efficient White Light Generation

A large‐area (30 × 30 cm2) polymer film, embedded with green‐ and red‐emitting colloidal semiconductor quantum dots (QDs) to generate white light excited by blue light emitting diodes (LEDs), is fabricated. To prevent reabsorption and nonradiative energy transfer between QDs causing a significant re...

Full description

Saved in:
Bibliographic Details
Published in:Physica status solidi. A, Applications and materials science Applications and materials science, 2018-05, Vol.215 (10), p.n/a
Main Authors: Bae, Kang‐Bin, Lee, Won‐Wook, Song, Hyeon‐Yong, Yun, Jin‐Hyeon, Polyakov, Alexander Y., Lee, In‐Hwan
Format: Article
Language:English
Subjects:
color conversion
composites
energy transfer
Light emitting diodes
Organic light emitting diodes
photoluminescence
polymer
Polymer films
Polymer matrix composites
Polymers
Quantum dots
Red shift
White light
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A large‐area (30 × 30 cm2) polymer film, embedded with green‐ and red‐emitting colloidal semiconductor quantum dots (QDs) to generate white light excited by blue light emitting diodes (LEDs), is fabricated. To prevent reabsorption and nonradiative energy transfer between QDs causing a significant redshift of the desired final color, the polymer film structure comprised of separated green and red emitting composite layers is explored. As a result, high‐quality white light generation is demonstrated by placing these composite films on a blue LED platform. The colloidal quantum dots (QDs) embedded in polymer matrix agglomerate. When the distance between QDs becomes within several nanometers, an energy transfer without light emission occurs from small QD to large QD. To avoid this nonradiative energy transfer causing a significant redshift from the desired final color, a double layer polymer structure comprised of separated green and red emitting composite film is fabricated.
ISSN:1862-6300
1862-6319
DOI:10.1002/pssa.201700644