Display Technology

Theis, Dietmar

doi:10.1002/14356007.a08_603.pub2

Cited by 2 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the above definitions, Cd-QD substance class cannot make up a package on its own because it must have a blue emissive material. To complete the package, we added InGaN substance as a blue emitting material. , InGaN also provides the blue backlight necessary for red and green QDs, which downconvert the light . InGaN is therefore an integral part of the display type, QLED.…”

Section: Methodsmentioning

confidence: 99%

“…These three metrics (QY, FWHM, and percent coverage Rec 2020) were collected for each material from their respective sources. InGaN performance information was gathered from the Ullman Encyclopedia of Industrial Chemistry (QY and peak wavelength) as well as the review by Wang (FWHM) . These values did not contain associated errors, so error values are not included in this assessment.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Are Substitutes to Cd-Based Quantum Dots in Displays More Sustainable, Effective, and Cost Competitive? An Alternatives Assessment Approach

Béchu

Ghoshal

Moores

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Light emissive organics and inorganic nanoparticles are substance classes competing for applications in displays in the form of organic light emitting diodes (OLEDs) and quantum LEDs (QLEDs), respectively. Upcoming substance classes, perovskites and Q-OLED displays, also contain novel nanomaterials and organics for these applications. However, the safety and viability of these emissive substances is difficult to assess quickly and broadly because of their complexity, their inherently different structures, and their rapid evolution in the literature. We propose the use of an alternatives assessment focusing on hazard, cost, and performance, so as to compare these possible substitute substances, with incombent cadmium-containing quantum dots. This assessment type is used in industry and government to inform chemical substitution. It uses available information, while pointing out important data gaps for decision-making. The cost assessment highlights competitiveness of OLEDs because of the low amounts needed in their application for display, but performance assessments do not identify a preferred alternative. The hazard results indicate that there is no clear alternative either, with each novel nanomaterial or organic substance having different negative aspects. These results identify the need for a low-hazard highperforming alternative substance, and the assessment provides a framework for researchers to evaluate their own novel substances.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Are Substitutes to Cd-Based Quantum Dots in Displays More Sustainable, Effective, and Cost Competitive? An Alternatives Assessment Approach

Béchu

Ghoshal

Moores

et al. 2022

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…To complete the package, we added InGaN substance as a blue emitting material. 23,24 InGaN also provides the blue backlight necessary for QDs, which down-convert the light. 25 InGaN is therefore an integral part of the display type, QLED.…”

Section: Identify Substance Class Of Concern and Scoping Problem Formulationmentioning

confidence: 99%

“…These three metrics (quantum yield, FWHM, and percent coverage Rec 2020) were collected for each material from their respective sources. InGaN performance information was gathered from the Ullman Encyclopedia of Industrial Chemistry (QY and peak wavelength) 23 as well as the review by T. Wang (FWHM). 51 For each package, the red, green, and blue values for each metric were averaged.…”

Section: Price Assessmentmentioning

confidence: 99%

Are substitutes to Cd-based quantum dots in displays more sustainable, effective, and cost competitive? An alternatives assessment approach

Béchu

Ghoshal

Moores

et al. 2021

Preprint

View full text Add to dashboard Cite

Light emissive organics and inorganic nanoparticles are substance classes competing for applications in displays in the form of organic LEDs (OLEDs) and quantum LEDs (QLEDs), respectively.Upcoming substance classes (perovskites) and Q-OLED displays also contain novel nanomaterials and organics for these applications. However, the sustainability of these emissive substances is difficult to assess quickly and broadly because of their complexity, their inherently different structures, and their rapid evolution in the literature. We propose the use of an alternatives assessment to compare the hazard, cost, and performance of these competing substances, with a focus on replacing cadmiumcontaining quantum dots. The cost assessment highlights competitiveness of OLEDs because of their low amounts needed per display, but performance assessments do not identify a preferred alternative. The hazard results indicate there is no clear alternative either, with each novel nanomaterial or organic substance having different negative aspects. These results identify the need for a low-hazard highperforming alternative substance, and the assessment provides a framework for researchers to evaluate their own novel substances.

show abstract

Display Technology

Abstract: The article contains sections titled: 1. Introduction 2. Display Categories … Show more

Cited by 2 publications

References 41 publications

Are Substitutes to Cd-Based Quantum Dots in Displays More Sustainable, Effective, and Cost Competitive? An Alternatives Assessment Approach

Are Substitutes to Cd-Based Quantum Dots in Displays More Sustainable, Effective, and Cost Competitive? An Alternatives Assessment Approach

Are substitutes to Cd-based quantum dots in displays more sustainable, effective, and cost competitive? An alternatives assessment approach

Contact Info

Product

Resources

About