Strain dependent effect on power degradation of CIGS thin film solar cell

Yang, Chen; Song, Kai; Xu, Xinliang; Yao, Gang; Wu, Zhenyu

doi:10.1016/j.solener.2019.11.012

Cited by 22 publications

(15 citation statements)

References 14 publications

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“…Despite such successes, there is an apparent paradox whereby similarly strained halide perovskites exhibit either beneficial or detrimental effects even when they are nominally similar materials. Furthermore, the magnitude of strain is relatively high in halide perovskites compared to other photovoltaic systems: for instance, residual strain values of up to ~2.4% for α-FAPbI3 4 and ~1.6% for CsPbBr3 have been reported 5 , whereas the performance of Si and Cu(In, Ga)Se2 devices drops substantially when residual strains exceed ~1% 6,7 . The high magnitude of strain in perovskite materials is particularly striking since perovskites are one of the most mechanically fragile of any photovoltaic materials 8 .…”

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confidence: 99%

Strain analysis and engineering in halide perovskite photovoltaics

et al. 2021

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Halide perovskites are a compelling candidate for the next generation of clean energy harvesting technologies thanks to their low cost, facile fabrication and outstanding semiconductor properties. However, photovoltaic device efficiencies are still below practical limits and long-term stability challenges hinder their practical application. Current evidence suggests that strain in halide perovskites is a key factor in dictating device efficiency and stability. Here, we outline the fundamentals of strain within halide perovskites relevant to photovoltaic applications and rationalize approaches to characterize the phenomenon. We examine recent breakthroughs in eliminating the adverse impacts of strain, enhancing both device efficiencies and operational stabilities. Finally, we discuss further challenges and outline future research directions for placing stress and strain studies at the forefront of halide perovskite research. An extensive understanding of strain in halide perovskite is needed, which would allow effective strain management and drive further enhancements in efficiencies and stabilities of perovskite photovoltaics.

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confidence: 99%

Strain analysis and engineering in halide perovskite photovoltaics

et al. 2021

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“…The current biomimetic research on peristaltic pumps indicates a rapidly developing field, as more peristaltic pumping systems using soft actuators are being developed, for example, for low‐energy‐consuming micropumps, artificial esophagi for ex vivo investigation, or as technical pumping alternatives . The advances in soft actuator technology enable the development of biomimetic and technical pumping systems that closely resemble biological systems.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, Nguyen et al review MEMS‐micropumps for microfluidics comparing pump size, flow rate, and back pressure. In Wang and Fu's review, the current state‐of‐the‐art in micropumping technology for biomedical applications during the last 5 years is shown. The review provides a useful source of reference for selecting micropumping schemes capable of meeting the specific flow rate requirements of different biomedical applications.…”

Section: Classification and Comparison Of Peristaltic Pumpsmentioning

confidence: 99%

“…The first technical peristaltic pump was patented in the USA by Eugene Allen in 1881 for blood transfusions . In the last 50 years, over 100 000 patents for peristaltic pumps in highly diverse applications were submitted (and google patent search (13.04.18; 1:37 p.m.)), varying from the classical blood pumps to microfluidic pumps (among others for microelectromechanical systems (mems) as described in the review by Nguyen et al and micropumps for biomedical applications in the review of Wang and Fu) to pumps for food slurries, highly aggressive acids, wastewater, and sewage …”

Section: Introductionmentioning

confidence: 99%

“…In common engineering, two designs are the most prominent ones in peristaltic pumps: 1) rotary peristaltic pumps with two or more rollers compressing a flexible tube for relatively large pumps (Figure b) and 2) a linear peristaltic pump design (Figure c), in which the tube is crimped with three or more piston‐ or finger‐like actuators, which are often used in microscale pump applications . It is to be noted that linear peristaltic pumps and peristaltic micropumps need three or more pump chambers to generate positive net flow rate, if not a flow in both directions would be generated and valves would be needed .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Silent Pumpers: A Comparative Topical Overview of the Peristaltic Pumping Principle in Living Nature, Engineering, and Biomimetics

Esser

Masselter

Speck

2019

Advanced Intelligent Systems

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This synopsis presents the state‐of‐the‐art of peristaltic pump systems in biomimetics and living nature, and allows for a comparison by highlighting the differences in structure and function, as well as advantages and drawbacks for technical implementation. For the first time, data of selected biological examples are collected in one study to give a comprehensive overview of the performance of biological peristaltic pumps. The developed biomimetic pumping systems not only mimic the biological principle and by this inherit its advantages, but also show the usability of the principle in various pumping applications and medical research. A direct comparison of peristaltic pump systems in nature, biomimetics, and technology highlights their similarities, differences, and allows for proposing new fields of application.

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The Longevity of Neural Interfaces—Mechanical Oscillation of Thin Film Metal‐Based Neural Electrodes Determine Stability During Electrical Stimulation

Schulte,

Ashouri,

Stieglitz

2023

Adv Funct Materials

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The success of bioelectronics medicine with neural implants inevitably depends on the longevity of neural interfaces where a full understanding of the associated risks serves as the first step, to begin with. Until now, failure of neural electrodes is primarily explained by extreme electrochemical reactions, whereas no direct link between electrical stimulation and mechanical deformation of microelectrodes can be proved. The research provides new quantitative evidence of electrically induced mechanical vibrations in thin film neural interfaces. This study investigates the dynamic changes in intrinsic mechanical stress in clinically used neural electrodes under electrical stimulation. Via live imaging of the electrode plane, the deformation and progressive adhesion loss of the thin film during stimulation is for the first time approved. The results reveal nano‐oscillations in the interfaces under alternating current. This hints at a direct link between electrochemical charge transfer and mechanical stability. Considering neural interfaces as resonating actuators serves as a key to assessing the stability of neural interfaces and a valuable input to a longstanding question on the associated failure mechanisms of thin film microelectrodes. It is believed, that the outcome of this work may significantly contribute to improving the future design of thin film neural interfaces and better conditioning them for life‐long reliability.

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Strain dependent effect on power degradation of CIGS thin film solar cell

Cited by 22 publications

References 14 publications

Strain analysis and engineering in halide perovskite photovoltaics

Strain analysis and engineering in halide perovskite photovoltaics

Silent Pumpers: A Comparative Topical Overview of the Peristaltic Pumping Principle in Living Nature, Engineering, and Biomimetics

The Longevity of Neural Interfaces—Mechanical Oscillation of Thin Film Metal‐Based Neural Electrodes Determine Stability During Electrical Stimulation

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