Peeling behavior of a thin-film on a corrugated surface

Peng, Zhilong; Chen, Shaohua

doi:10.1016/j.ijsolstr.2015.02.003

Cited by 37 publications

(7 citation statements)

References 46 publications

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“…The peeling strength of the films could be improved significantly by increasing the substrate roughness. [23,24] Therefore, the surface roughness of the PVDF surface was controlled by changing the concentration of PVDF solutions. Figure 2 shows the surface morphology of the PVDF thin layer spin-coated on a glass substrate with variations in the concentration from 5 to 20 wt%.…”

Section: Resultsmentioning

confidence: 99%

Rollable Ultraviolet Photodetector Based on ZnAl‐Layered Double Hydroxide/Polyvinylidene Fluoride Membrane

Choi

Lee

et al. 2022

Adv Materials Inter

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bandgap semiconductors, such as SiC, diamond, Ga 2 O 3 , GaN, ZnS, ZnO, or ZnSe, suffer from problems, such as low sensitivity, long response time, nonlinear photocurrent with incident optical power, and a complicated fabrication process. [3][4][5][6] In addition, the fabrication of a flexible or rollable UV photodetector with sufficient durability has not been reported, despite the great significance of sustainable mechanical flexibility for the sensor in wearable sensing systems.Many studies have been focused on developing efficient, flexible, and highly sensitive UV photodetectors from various nanostructured materials. As an emerging nanomaterial for effective flexible photodetectors, 2D nanomaterials have attracted considerable attention because of their unique properties, such as atomic-scale thickness, lightweight, and flexibility. [8,9] One representative 2D nanomaterial, layered double hydroxides (LDHs), has received considerable attention owing to their novel optical, electrical, structural, and electrochemical properties. [10][11][12][13][14] LDHs are functional clay composed of an interlayer anion and a host layer that is positively charged in a layer-by-layer structure. The general chemical composition of LDHs can be described in the formula [M 2+(1-α) N 3+ (OH) 2 ] α + [A n− ] α/n •mH 2 O, where M 2+ is the divalent cation (e.g.

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Section: Resultsmentioning

confidence: 99%

Rollable Ultraviolet Photodetector Based on ZnAl‐Layered Double Hydroxide/Polyvinylidene Fluoride Membrane

Choi

Lee

et al. 2022

Adv Materials Inter

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“…This result suggests that the introduction of surface roughness suppresses blister formation. Peng and Chen theoretically investigated the peeling behaviour of a thin film adhered to a corrugated substrate 19 . They found that the maximal peel-off force (adhesion) of the corrugated interface increases as the substrate roughness increases.…”

Section: Resultsmentioning

confidence: 99%

Formation and suppression of hydrogen blisters in tunnelling oxide passivating contact for crystalline silicon solar cells

Choi

Kwon

Min

et al. 2020

Sci Rep

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the formation of hydrogen blisters in the fabrication of tunnelling oxide passivating contact (topcon) solar cells critically degrades passivation. in this study, we investigated the formation mechanism of blisters during the fabrication of topcons for crystalline silicon solar cells and the suppression of such blisters. We tested the effects of annealing temperature and duration, surface roughness, and deposition temperature on the blister formation, which was suppressed in two ways. first, topcon fabrication on a rough surface enhanced adhesion force, resulting in reduced blister formation after thermal annealing. Second, deposition or annealing at higher temperatures resulted in the reduction of hydrogen in the film. A sample fabricated through low-pressure chemical vapor deposition at 580 °C was free from silicon-hydrogen bonds and blisters after the TOPCon structure was annealed. Remarkably, samples after plasma-enhanced chemical vapor deposition at 300, 370, and 450 °C were already blistered in the as-deposited state, despite low hydrogen contents. Analysis of the hydrogen incorporation, microstructure, and deposition mechanism indicate that in plasma-enhanced chemical vapor deposition (pecVD) deposition, although the increase of substrate temperature reduces the hydrogen content, it risks the increase of porosity and molecular-hydrogen trapping, resulting in even more severe blistering.

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“…It is experimentally demonstrated that higher peel rates cause higher peel force 25,39–41 . The primary reason is changing the effective length of cohesive zone in the adhesive layer which is changing dramatically by the peel rate.…”

Section: Resultsmentioning

confidence: 99%

Quantitative peel test for thin films/layers based on a coupled parametric and statistical study

Rezaee

Tsai

Haider

et al. 2019

Sci Rep

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The adhesion strength of thin films is critical to the durability of micro and nanofabricated devices. However, current testing methods are imprecise and do not produce quantitative results necessary for design specifications. The most common testing methods involve the manual application and removal of unspecified tape. This overcome many of the challenges of connecting to thin films to test their adhesion properties but different tapes, variation in manual application, and poorly controlled removal of tape can result in wide variation in resultant forces. Furthermore, the most common tests result in a qualitative ranking of film survival, not a measurement with scientific units. This paper presents a study into application and peeling parameters that can cause variation in the peeling force generated by tapes. The results of this study were then used to design a test methodology that would control the key parameters and produced repeatable quantitative measurements. Testing using the resulting method showed significant improvement over more standard methods, producing measured results with reduced variation. The new method was tested on peeling a layer of paint from a PTFE backing and was found to be sensitive enough to register variation in force due to differing peeling mechanisms within a single test.

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Peeling behavior of a thin-film on a corrugated surface

Cited by 37 publications

References 46 publications

Rollable Ultraviolet Photodetector Based on ZnAl‐Layered Double Hydroxide/Polyvinylidene Fluoride Membrane

Rollable Ultraviolet Photodetector Based on ZnAl‐Layered Double Hydroxide/Polyvinylidene Fluoride Membrane

Formation and suppression of hydrogen blisters in tunnelling oxide passivating contact for crystalline silicon solar cells

Quantitative peel test for thin films/layers based on a coupled parametric and statistical study

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