Hybrid Remote Quantum Dot/powder Phosphor Designs for Display Backlights

Overview

Journal Light Sci Appl

Publisher Springer Nature

Date 2018 Sep 1

PMID 30167259

Citations 18

Authors

Sofie Abe

Jonas J Joos

Lisa Idj Martin

Zeger Hens

Philippe F Smet

Affiliations

Soon will be listed here.

Abstract

Quantum dots are ideally suited for color conversion in light emitting diodes owing to their spectral tunability, high conversion efficiency and narrow emission bands. These properties are particularly important for display backlights; the highly saturated colors generated by quantum dots justify their higher production cost. Here, we demonstrate the benefits of a hybrid remote phosphor approach that combines a green-emitting europium-doped phosphor with red-emitting CdSe/CdS core/shell quantum dots. Different stacking geometries, including mixed and separate layers of both materials, are studied at the macroscopic and microscopic levels to identify the configuration that achieves maximum device efficiency while minimizing material usage. The influence of reabsorption, optical outcoupling and refractive index-matching between the layers is evaluated in detail with respect to device efficiency and cost. From the findings of this study, general guidelines are derived to optimize both the cost and efficiency of CdSe/CdS and other (potentially cadmium-free) quantum dot systems. When reabsorption of the green and/or red emission is significant compared to the absorption strength for the blue emission of the pumping light emitting diode, the hybrid remote phosphor approach becomes beneficial.

Citing Articles

Color Rendering Index over 95 Achieved by Using Light Recycling Process Based on Hybrid Remote-Type Red Quantum-Dot Components Applied to Conventional LED Lighting Devices.

Baek E, Kim B, Kim S, Song J, Yoo J, Park S Nanomaterials (Basel). 2023; 13(18).

PMID: 37764589 PMC: 10534905. DOI: 10.3390/nano13182560.

CuInS Nanocrystals Embedded PMMA Composite Films: Adjustment of Polymer Molecule Weights and Application in Remote-Type White LEDs.

Zhou Q, Shang Z Nanomaterials (Basel). 2023; 13(6).

PMID: 36985979 PMC: 10058765. DOI: 10.3390/nano13061085.

Full-color micro-LED display with photo-patternable and highly ambient-stable perovskite quantum dot/siloxane composite as color conversion layers.

Shim H, Kim J, Park S, Kim B, Jang B, Lee H Sci Rep. 2023; 13(1):4836.

PMID: 36964232 PMC: 10039071. DOI: 10.1038/s41598-023-31945-6.

Nanoantennas Patterned by Colloidal Lithography for Enhanced Nanophosphor Light Emission.

Viana J, Romero M, Lozano G, Miguez H ACS Appl Nano Mater. 2022; 5(11):16242-16249.

PMID: 36466302 PMC: 9706497. DOI: 10.1021/acsanm.2c03258.

Configuration- and concentration-dependent hybrid white light generation using red, green, and blue quantum dots embedded in DNA thin films.

Arasu V, Jo D, Chae H, Chung H, Park S Nanoscale Adv. 2022; 1(2):602-612.

PMID: 36132242 PMC: 9473279. DOI: 10.1039/c8na00252e.

References

Kong Y, Tamargo I, Kim H, Johnson B, Gupta M, Koh T . 3D printed quantum dot light-emitting diodes. Nano Lett. 2014; 14(12):7017-23. DOI: 10.1021/nl5033292. View

Nedelcu G, Protesescu L, Yakunin S, Bodnarchuk M, Grotevent M, Kovalenko M . Fast Anion-Exchange in Highly Luminescent Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, I). Nano Lett. 2015; 15(8):5635-40. PMC: 4538456. DOI: 10.1021/acs.nanolett.5b02404. View

Chen G, Yeh C, Yeh M, Ho S, Chen H . Wide gamut white light emitting diodes using quantum dot-silicone film protected by an atomic layer deposited TiO2 barrier. Chem Commun (Camb). 2015; 51(79):14750-3. DOI: 10.1039/c5cc05299h. View

Jun S, Lee J, Jang E . Highly luminescent and photostable quantum dot-silica monolith and its application to light-emitting diodes. ACS Nano. 2013; 7(2):1472-7. DOI: 10.1021/nn3052428. View

Li L, Reiss P . One-pot synthesis of highly luminescent InP/ZnS nanocrystals without precursor injection. J Am Chem Soc. 2008; 130(35):11588-9. DOI: 10.1021/ja803687e. View

Pust P, Weiler V, Hecht C, Tucks A, Wochnik A, Henss A . Narrow-band red-emitting Sr[LiAl₃N₄]:Eu²⁺ as a next-generation LED-phosphor material. Nat Mater. 2014; 13(9):891-6. DOI: 10.1038/nmat4012. View

Mutlugun E, Hernandez-Martinez P, Eroglu C, Coskun Y, Erdem T, Sharma V . Large-area (over 50 cm × 50 cm) freestanding films of colloidal InP/ZnS quantum dots. Nano Lett. 2012; 12(8):3986-93. DOI: 10.1021/nl301198k. View

Carbone L, Nobile C, De Giorgi M, Della Sala F, Morello G, Pompa P . Synthesis and micrometer-scale assembly of colloidal CdSe/CdS nanorods prepared by a seeded growth approach. Nano Lett. 2007; 7(10):2942-50. DOI: 10.1021/nl0717661. View

Wood V, Bulovic V . Colloidal quantum dot light-emitting devices. Nano Rev. 2011; 1. PMC: 3215219. DOI: 10.3402/nano.v1i0.5202. View

10.

Bourzac K . Quantum dots go on display. Nature. 2013; 493(7432):283. DOI: 10.1038/493283a. View

11.

Leyre S, Coutino-Gonzalez E, Joos J, Ryckaert J, Meuret Y, Poelman D . Absolute determination of photoluminescence quantum efficiency using an integrating sphere setup. Rev Sci Instrum. 2015; 85(12):123115. DOI: 10.1063/1.4903852. View

12.

Kim J, Yang H . White lighting device from composite films embedded with hydrophilic Cu(In, Ga)S2/ZnS and hydrophobic InP/ZnS quantum dots. Nanotechnology. 2014; 25(22):225601. DOI: 10.1088/0957-4484/25/22/225601. View

13.

Zhu H, Lin C, Luo W, Shu S, Liu Z, Liu Y . Highly efficient non-rare-earth red emitting phosphor for warm white light-emitting diodes. Nat Commun. 2014; 5:4312. DOI: 10.1038/ncomms5312. View

14.

Akkerman Q, DInnocenzo V, Accornero S, Scarpellini A, Petrozza A, Prato M . Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions. J Am Chem Soc. 2015; 137(32):10276-81. PMC: 4543997. DOI: 10.1021/jacs.5b05602. View

15.

Hirayama R, Naruse M, Nakayama H, Tate N, Shiraki A, Kakue T . Design, implementation and characterization of a quantum-dot-based volumetric display. Sci Rep. 2015; 5:8472. PMC: 4329567. DOI: 10.1038/srep08472. View

16.

Protesescu L, Yakunin S, Bodnarchuk M, Krieg F, Caputo R, Hendon C . Nanocrystals of Cesium Lead Halide Perovskites (CsPbX₃, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut. Nano Lett. 2015; 15(6):3692-6. PMC: 4462997. DOI: 10.1021/nl5048779. View

17.

. Nanocrystals in their prime. Nat Nanotechnol. 2014; 9(5):325. DOI: 10.1038/nnano.2014.101. View

18.

Park H, Oh J, Do Y . Toward scatter-free phosphors in white phosphor-converted light-emitting diodes. Opt Express. 2012; 20(9):10218-28. PMC: 3482912. DOI: 10.1364/OE.20.010218. View

19.

Jang E, Jun S, Jang H, Lim J, Kim B, Kim Y . White-light-emitting diodes with quantum dot color converters for display backlights. Adv Mater. 2010; 22(28):3076-80. DOI: 10.1002/adma.201000525. View