Colloidal Silicon Quantum Dot-Based Cavity Light-Emitting Diodes with Narrowed and Tunable Electroluminescence

I. Teng Cheong; Josef Mock; Maria Kallergi; Elisabeth Groß; Alkiviathes Meldrum; Bernhard Rieger; Markus Becherer; Jonathan G.C. Veinot

doi:10.1002/adom.202201834

Colloidal Silicon Quantum Dot-Based Cavity Light-Emitting Diodes with Narrowed and Tunable Electroluminescence

I. Teng Cheong, Josef Mock, Maria Kallergi, Elisabeth Groß, Alkiviathes Meldrum, Bernhard Rieger, Markus Becherer, Jonathan G.C. Veinot

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Luminescent colloidal silicon quantum dots (SiQDs) are explored as alternatives to metal-based quantum dots for light-emitting diodes (LEDs) because of the abundance and biocompatibility of silicon. To date, the broad electroluminescence (EL) bandwidth (>100 nm) and blueshifting of EL at high applied voltages of SiQD-LEDs are outstanding challenges that limit a competitive spectral purity and device stability. Herein, the fabrication and testing of SiQD-LEDs that incorporate a Fabry–Pérot cavity are reported which exhibit a narrow spectral linewidth as low as ≈23 nm. The presented devices also provide wavelength and visual stability from +4 to +8 V, as well as spectral tunability.

Original language	English
Article number	2201834
Journal	Advanced Optical Materials
Volume	11
Issue number	1
DOIs	https://doi.org/10.1002/adom.202201834
State	Published - 4 Jan 2023

Keywords

Fabry–Pérot cavity
colloidal quantum dots
electroluminescence
light-emitting diodes
silicon nanoparticles

Access to Document

10.1002/adom.202201834

Cite this

@article{f25c31a7eb244961bb664945c06e1a18,

title = "Colloidal Silicon Quantum Dot-Based Cavity Light-Emitting Diodes with Narrowed and Tunable Electroluminescence",

abstract = "Luminescent colloidal silicon quantum dots (SiQDs) are explored as alternatives to metal-based quantum dots for light-emitting diodes (LEDs) because of the abundance and biocompatibility of silicon. To date, the broad electroluminescence (EL) bandwidth (>100 nm) and blueshifting of EL at high applied voltages of SiQD-LEDs are outstanding challenges that limit a competitive spectral purity and device stability. Herein, the fabrication and testing of SiQD-LEDs that incorporate a Fabry–P{\'e}rot cavity are reported which exhibit a narrow spectral linewidth as low as ≈23 nm. The presented devices also provide wavelength and visual stability from +4 to +8 V, as well as spectral tunability.",

keywords = "Fabry–P{\'e}rot cavity, colloidal quantum dots, electroluminescence, light-emitting diodes, silicon nanoparticles",

author = "Cheong, {I. Teng} and Josef Mock and Maria Kallergi and Elisabeth Gro{\ss} and Alkiviathes Meldrum and Bernhard Rieger and Markus Becherer and Veinot, {Jonathan G.C.}",

note = "Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",

year = "2023",

month = jan,

day = "4",

doi = "10.1002/adom.202201834",

language = "English",

volume = "11",

journal = "Advanced Optical Materials",

issn = "2195-1071",

publisher = "John Wiley & Sons Inc.",

number = "1",

}

TY - JOUR

T1 - Colloidal Silicon Quantum Dot-Based Cavity Light-Emitting Diodes with Narrowed and Tunable Electroluminescence

AU - Cheong, I. Teng

AU - Mock, Josef

AU - Kallergi, Maria

AU - Groß, Elisabeth

AU - Meldrum, Alkiviathes

AU - Rieger, Bernhard

AU - Becherer, Markus

AU - Veinot, Jonathan G.C.

PY - 2023/1/4

Y1 - 2023/1/4

N2 - Luminescent colloidal silicon quantum dots (SiQDs) are explored as alternatives to metal-based quantum dots for light-emitting diodes (LEDs) because of the abundance and biocompatibility of silicon. To date, the broad electroluminescence (EL) bandwidth (>100 nm) and blueshifting of EL at high applied voltages of SiQD-LEDs are outstanding challenges that limit a competitive spectral purity and device stability. Herein, the fabrication and testing of SiQD-LEDs that incorporate a Fabry–Pérot cavity are reported which exhibit a narrow spectral linewidth as low as ≈23 nm. The presented devices also provide wavelength and visual stability from +4 to +8 V, as well as spectral tunability.

AB - Luminescent colloidal silicon quantum dots (SiQDs) are explored as alternatives to metal-based quantum dots for light-emitting diodes (LEDs) because of the abundance and biocompatibility of silicon. To date, the broad electroluminescence (EL) bandwidth (>100 nm) and blueshifting of EL at high applied voltages of SiQD-LEDs are outstanding challenges that limit a competitive spectral purity and device stability. Herein, the fabrication and testing of SiQD-LEDs that incorporate a Fabry–Pérot cavity are reported which exhibit a narrow spectral linewidth as low as ≈23 nm. The presented devices also provide wavelength and visual stability from +4 to +8 V, as well as spectral tunability.

KW - Fabry–Pérot cavity

KW - colloidal quantum dots

KW - electroluminescence

KW - light-emitting diodes

KW - silicon nanoparticles

UR - http://www.scopus.com/inward/record.url?scp=85141877465&partnerID=8YFLogxK

U2 - 10.1002/adom.202201834

DO - 10.1002/adom.202201834

M3 - Article

AN - SCOPUS:85141877465

SN - 2195-1071

VL - 11

JO - Advanced Optical Materials

JF - Advanced Optical Materials

IS - 1

M1 - 2201834

ER -

Colloidal Silicon Quantum Dot-Based Cavity Light-Emitting Diodes with Narrowed and Tunable Electroluminescence

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this