Effect of oxygen plasma on ITO surface and OLED physical properties

Yahya, Mohd Yazid; Fadavieslam, M. R.

doi:10.1016/j.microrel.2023.114981

Cited by 4 publications

(3 citation statements)

References 64 publications

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“…The C 1s spectra of all the substrates possessed the characteristic C−C, C−O−C, and O−C�O peaks (Figure S5a), 35 with the total amount of carbon being found to be significantly lower in sm-ITO (16.6 atom %) than the others (Table S1). Although UV−ozone treatment can slightly reduce the surface carbon contamination and induce surface energy changes on the ITO, 36 we found that annealing had a greater impact on them, while sm-ITO was able to display superior characteristics in terms of purity induced by the nanoparticle treatment prior to the thermal annealing process. The O 1s spectra comprise the surface oxides (M−O), oxygen vacancies (V O ), and surface hydroxyls (M−OH) (Figure S5b).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Highly Efficient HTM-Free Tin Perovskite Solar Cells with Outstanding Stability Exceeding 10000 h

Rajamanickam,

Narra,

Seetharaman

et al. 2023

ACS Appl. Mater. Interfaces

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The bottleneck in the rapid development of tin-based perovskite solar cells (TPSCs) is the inherent chemical instability. Although this is being addressed continuously, the device performance has not improved further due to the use of PEDOT:PSS as the hole-transport material (HTM), which has poor long-term stability. Herein we have applied commercial ITO nanoparticles over ITO glass substrates and altered the surface chemistry of the ITO electrode via a simple two-step thermal annealing, followed by a UV−ozone treatment. These surface-modified ITO electrodes display promising interfacial characteristics, such as a suitable band alignment owing to significantly reduced surface carbon contamination, increased In−O bonding, and reduced oxygen vacancies, that enabled fabrication of an HTM-free TPSC device according to a two-step method. The fabricated device possessed an outstanding power conversion efficiency (PCE) of 9.7%, along with a superior long-term stability by retaining over 90% of the initial PCE upon shelf storage in a glovebox for a period of over 10000 h. The application of ITO nanoparticles led to effective interfacial passivation, whose impacts on the long-term durability were assessed using electrochemical impedance spectroscopy, time-resolved photoluminescence decay profiles, and femtosecond transient absorption spectroscopy techniques.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Highly Efficient HTM-Free Tin Perovskite Solar Cells with Outstanding Stability Exceeding 10000 h

Rajamanickam,

Narra,

Seetharaman

et al. 2023

ACS Appl. Mater. Interfaces

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“…Performance issues resulting from OLED degradation include black spots, altered colors, decreased efficiency, and catastrophic failures. Exposure to oxygen and moisture can cause the oxidation and degradation of organic materials [91], leading to a drop in efficiency, and brightness, and an increase in operating voltage, eventually resulting in device failure. Organic materials used in OLED fabrication are susceptible to thermal, photo, and chemical degradation over time, decreasing efficiency and brightness.…”

Section: Degradation Mechanism In Oledsmentioning

confidence: 99%

“…It is important to consider external and internal factors that impact the device to define the causes and mechanisms of OLED degradation properly. External factors like oxygen and water can considerably affect OLEDs' lifetime [91]. The performance of OLEDs can also be influenced by regularly occurring variations in temperature and light, some of which are known and controllable.…”

Section: External Processes Of Degradationmentioning

confidence: 99%

Unraveling Degradation Processes and Strategies for Enhancing Reliability in Organic Light-Emitting Diodes

Naqvi,

Baig,

Farid

et al. 2023

Nanomaterials

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Organic light-emitting diodes (OLEDs) have emerged as a promising technology for various applications owing to their advantages, including low-cost fabrication, flexibility, and compatibility. However, a limited lifetime hinders the practical application of OLEDs in electronic devices. OLEDs are prone to degradation effects during operation, resulting in a decrease in device lifetime and performance. This review article aims to provide an exciting overview of OLED degradation effects, highlighting the various degradation mechanisms. Subsequently, an in-depth exploration of OLEDs degradation mechanisms and failure modes is presented. Internal and external processes of degradation, as well as the reactions and impacts of some compounds on OLED performance, are then elucidated. To overcome degradation challenges, the review emphasizes the importance of utilizing state-of-the-art analytical techniques and the role of these techniques in enhancing the performance and reliability of OLEDs. Furthermore, the review addresses the critical challenges of lifetime and device stability, which are crucial for the commercialization of OLEDs. This study also explores strategies to improve OLEDs’ lifetime and stability, such as using barrier layers and encapsulation techniques. Overall, this article aims to contribute to the advancement of OLED technology and its successful integration into diverse electronic applications.

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P‐13.11: Study on the Light Utilization Efficiency of TFT‐LCD by ITO‐Cu Structure Gate

Guanshui,

Jinming,

Ziran

2024

Symp Digest of Tech Papers

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This article investigates the effect of ITO‐Cu gate structure on the penetration rate of LCD panels. Firstly, the ITO tail range is determined through finite difference time domain simulation. During the experiment, the water content during the ITO PVD film formation process is increased to improve the ITO single film penetration rate. In addition, due to the continuous Cu film formation process leading to substrate rise, ITO crystallizes prematurely and etching is difficult. This article obtains the ITO crystallization temperature through experiments, simultaneously controlling the thickness of Cu film can effectively avoid the problem of ITO crystallization. The experimental results show that the penetration rate of ITO/Cu structured TFT‐LCD is 3%~5% higher than that of Mo/Cu structured TFT‐LCD.

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Effect of oxygen plasma on ITO surface and OLED physical properties

Cited by 4 publications

References 64 publications

Highly Efficient HTM-Free Tin Perovskite Solar Cells with Outstanding Stability Exceeding 10000 h

Highly Efficient HTM-Free Tin Perovskite Solar Cells with Outstanding Stability Exceeding 10000 h

Unraveling Degradation Processes and Strategies for Enhancing Reliability in Organic Light-Emitting Diodes

P‐13.11: Study on the Light Utilization Efficiency of TFT‐LCD by ITO‐Cu Structure Gate

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