The Effect of Electrode Materials on the Optical Characteristics of Infrared Quantum Dot-Light Emitting Devices

Farghal, Ahmed E. A.; Wageh, S.; Elazm, Atef Abou

doi:10.2528/pierc10112602

Cited by 3 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the turn-on voltages, defined at 1 cd/m 2 , for QLEDs with three-layer H-PH1000 and ITO are 2.6 V and 3.0 V. Moreover, the maximum CE and EQE of three-layer H-PH1000 electrodes QLEDs were 37.01 cd/m 2 and 11.01 %. As shown in Table S2, the electroluminescence values of three-layer H-PH100 QLED exhibit higher performance compared to QLEDs employing the previously explored ITO replacement electrodes [40][41][42]. The main factor contributing to the observed increase in efficiency is the band alignment resulting from the H-PH1000 electrode's high work function.…”

Section: Performance Of Qled With H-ph1000 Electrodesmentioning

confidence: 97%

Highly Efficient ITO-Free Quantum-Dot Light Emitting Diodes via Solution-Processed PEDOT:PSS Semitransparent Electrode

et al. 2023

View full text Add to dashboard Cite

We present a study on the potential use of sulfuric acid-treated poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) as a viable alternative to indium tin oxide (ITO) electrodes in quantum dot light-emitting diodes (QLEDs). ITO, despite its high conductivity and transparency, is known for its disadvantages of being brittle, fragile, and expensive. Furthermore, due to the high hole injection barrier of quantum dots, the need for electrodes with a higher work function is becoming more significant. In this report, we present solution-processed, sulfuric acid-treated PEDOT:PSS electrodes for highly efficient QLEDs. The high work function of the PEDOT:PSS electrodes improved the performance of the QLEDs by facilitating hole injection. We demonstrated the recrystallization and conductivity enhancement of PEDOT:PSS upon sulfuric acid treatment using X-ray photoelectron spectroscopy and Hall measurement. Ultraviolet photoelectron spectroscopy (UPS) analysis of QLEDs showed that sulfuric acid-treated PEDOT:PSS exhibited a higher work function than ITO. The maximum current efficiency and external quantum efficiency based on the PEDOT:PSS electrode QLEDs were measured as 46.53 cd/A and 11.01%, which were three times greater than ITO electrode QLEDs. These findings suggest that PEDOT:PSS can serve as a promising replacement for ITO electrodes in the development of ITO-free QLED devices.

show abstract

Section: Performance Of Qled With H-ph1000 Electrodesmentioning

confidence: 97%

Highly Efficient ITO-Free Quantum-Dot Light Emitting Diodes via Solution-Processed PEDOT:PSS Semitransparent Electrode

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Therefore most research has been focused on reducing the roughness of CNT film . To show the potential of CNT as a candidate for TCEs for QDLEDs, Faghal et al . investigated SWCNT‐based TCEs for IR QDLED (Figure a, 20b).…”

Section: Transparent Conducting Electrodes For Quantum Dots Light Emimentioning

confidence: 99%

“…Therefore most research has been focused on reducing the roughness of CNT film. [124][125][126] To show the potential of CNT as a candidate for TCEs for QDLEDs, Faghal et al [127] investigated SWCNT-based TCEs for IR QDLED (Figure 20a, 20b). Table 3 shows that the SWCNT anode had higher eternal emission and lower anode/organic modes than did the QDLED with the ITO anode.…”

Section: Carbon Nanotube (Cnt) Electrodesmentioning

confidence: 99%

Transparent Conducting Electrodes for Quantum Dots Light Emitting Diodes

Seok

Lee

Park

et al. 2019

Israel Journal of Chemistry

View full text Add to dashboard Cite

In this review, we briefly describe a recent research development of transparent conducting electrodes (TCEs) for next‐generation quantum dot‐based light‐emitting diodes (QDLEDs). Although sputtered Sn‐doped In2O3 (ITO) and chemically grown F‐doped SnO2 (FTO) electrodes have mainly been employed as transparent electrodes for QDLEDs, there have been great advances in TCE materials and fabrication processes. This review presents important characteristics of various TCE and applications in QDLEDs as a transparent cathode or anode. In particular, we will focus on characteristics of metal grids, metal nanowire, carbon nanotube, graphene, and hybrid electrodes for QDLEDs as promising alternatives to typical ITO and FTO electrodes. In addition, we discuss the current status of transparent conducting oxide‐based QDLEDs. By comparing the performances of QDLED with different TCEs, we suggest promising alternatives ITO or FTO electrodes.

show abstract

Preparation and characterization of a novel system of CdS nanoparticles embedded in borophosphate glass matrix

Wageh¹,

El‐Nahas²,

Higazy³

et al. 2013

Journal of Alloys and Compounds

View full text Add to dashboard Cite

The Effect of Electrode Materials on the Optical Characteristics of Infrared Quantum Dot-Light Emitting Devices

Cited by 3 publications

References 20 publications

Highly Efficient ITO-Free Quantum-Dot Light Emitting Diodes via Solution-Processed PEDOT:PSS Semitransparent Electrode

Highly Efficient ITO-Free Quantum-Dot Light Emitting Diodes via Solution-Processed PEDOT:PSS Semitransparent Electrode

Transparent Conducting Electrodes for Quantum Dots Light Emitting Diodes

Preparation and characterization of a novel system of CdS nanoparticles embedded in borophosphate glass matrix

Contact Info

Product

Resources

About