Channel Cracking and Interfacial Delamination of Indium Tin Oxide (ITO) Nano-Sized Films on Polyethylene Terephthalate (PET) Substrates: Experiments and Modeling

Ziaei, S.; Wu, Q.; Fitch, J. T.; Elbadry, Mohamed; Zikry, M. A.

doi:10.1007/s11340-019-00534-y

Cited by 12 publications

(6 citation statements)

References 43 publications

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“…The failure of thin film composite materials mainly involves the propagation of microcracks under tension. At present, cohesive fracture and interface delamination are considered the main failure modes of thin film materials [19] . Cohesive fracture is the cracking of brittle films under tension, commonly known as channel fracture.…”

Section: Film Fracture Mechanismmentioning

confidence: 99%

Simulation and experimental study on micro grinding mechanism and machining morphology of ITO conductive glass

Sun,

Qiu,

Liu

et al. 2024

Preprint

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The analysis of the grinding mechanism of ITO conductive glass is particularly important for revealing material damage and chip formation. This article proposes the removal mechanism of brittle thin film materials during grinding based on the indentation model. And based on the thin film composite structure of ITO conductive glass, a material model in finite element simulation was established. The surface morphology and chip state of ITO conductive glass were studied through microscale grinding experiments. By comparing the simulation results, it has been proven that the ITO film is removed in a brittle fracture mode during the grinding process, while the removal mode of the glass substrate is influenced by the process parameters. The interlayer fracture between the film and substrate will affect the processing quality.

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Section: Film Fracture Mechanismmentioning

confidence: 99%

Simulation and experimental study on micro grinding mechanism and machining morphology of ITO conductive glass

Sun,

Qiu,

Liu

et al. 2024

Preprint

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“…Indium tin oxide (ITO) thin film stands out as the earliest and most widely used transparent conductive oxide, boasting high conductivity, visible light transmittance, and excellent etching properties . Despite its advantages, ITO requires high processing temperatures for crystallization to exhibit optimal photoelectric performance and is prone to cracking under stress, limiting its application in flexible devices. , Consequently, various flexible conductive materials have been developed, including carbon-based conductive films like carbon nanotubes and graphene, metal-based conductive films such as nanowires and ultrathin metal films, and organic polymer conductive films . While these alternatives offer exceptional flexibility, practical challenges such as the high cost of preparing graphene films and the susceptibility of metal counterparts to oxidation must be addressed …”

Section: Introductionmentioning

confidence: 99%

Bendable and Curlable Electroluminescent Devices Based on Room Temperature Deposited Flexible Indium Zinc Tin Oxide Electrode

Fu,

Li,

Zhong

et al. 2024

ACS Appl. Opt. Mater.

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The pursuit of high-performance, stable, and mechanically superior transparent conductive electrodes, compatible with flexible optoelectronic devices, remains a constant endeavor. Indium tin oxide (ITO) currently stands out as the most stable electrode, yet the flexibility of commercial ITO films falls short of meeting the requirements for flexible device applications. In this study, we successfully synthesized amorphous Zn- and Sn-doped In2O3 (IZTO) with exceptional flexibility at room temperature. The sheet resistance of IZTO remained consistent even after enduring 10,000 bending cycles with a radius of 4 mm and exhibited resilience to bending radii as low as 1 mm. Employing IZTO thin films in alternating current electroluminescent (ACEL) devices revealed a brightness of 171.6 cd/m2 at 160 V and 300 Hz. The flexibility of the IZTO thin films allows ACEL devices to maintain brightness after 2000 bends at a 4 mm radius. Furthermore, curlable ACEL devices with dimensions of approximately ten square centimeters were successfully demonstrated on flexible fabrics. The developed IZTO electrode emerges as a promising candidate for future applications in flexible ACEL devices.

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“…The optimal processing conditions with high removal rate, low non-uniformity, low resistivity, and high transmittance were obtained. Ziaei et al [25] explained the failure behaviors of layered film systems, such as channel cracking and interfacial delamination, by using a combination of nonlinear finite element method, dislocation-density crystalline plasticity model, and viscoelastic formulation. Wang et al [26] obtained mechanical performance data such as hardness, elastic modulus, energy release rate, and fracture toughness of ITO thin film materials through nanoindentation tests.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations into the effect of process parameters on the machining quality for ITO conductive glass using by micro grooves grinding

Liu,

Qiu,

Sun

et al. 2023

Preprint

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To investigate the effect of micro-scale grinding on the quality of ITO conductive glass, this paper conducted micro-scale grinding experiments on ITO conductive glass. The influence of process parameters on machining quality was analyzed using micro-grinding force, surface roughness, and sheet resistance as indicators. Meanwhile, soda-lime glass was set as the control group to analyze the effect of ITO film. The results indicate that brittle fracture is the main removal method for ITO films, and the glass substrate exhibits two different removal methods, brittle and ductile, depending on the process parameters. The ITO thin film layer suppresses the sheet deformation of the glass substrate, increasing the grinding force and reducing the processing quality. Increasing the spindle speed, reducing the feed speed, and reducing the cutting depth can improve the machining quality. The spindle speed has a significant impact on surface roughness, while the cutting depth has a significant impact on the sheet resistance of the thin film. In addition, soda-lime glass chips mainly appear in powder and granular form, while ITO conductive glass also has flaky thin film chips generated by interlayer fracture.

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Channel Cracking and Interfacial Delamination of Indium Tin Oxide (ITO) Nano-Sized Films on Polyethylene Terephthalate (PET) Substrates: Experiments and Modeling

Cited by 12 publications

References 43 publications

Simulation and experimental study on micro grinding mechanism and machining morphology of ITO conductive glass

Simulation and experimental study on micro grinding mechanism and machining morphology of ITO conductive glass

Bendable and Curlable Electroluminescent Devices Based on Room Temperature Deposited Flexible Indium Zinc Tin Oxide Electrode

Experimental investigations into the effect of process parameters on the machining quality for ITO conductive glass using by micro grooves grinding

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