Flexible organic electronic devices on metal foil substrates for lighting, photovoltaic, and other applications

D’Andrade, Brian; Kattamis, Alex Z.; Murphy, Patrick F.

doi:10.1016/b978-1-78242-035-4.00013-0

Cited by 8 publications

(8 citation statements)

References 51 publications

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“…Year/Era References Early use of flexible material as straw with slurry for strengthening houses BC [89] Discovery of electric conduction in organic materials [90] Polymers conceptualized-rapid development followed [91] Invention of flexible solar panels [92] Implementation of flexible single silicon solar cells on satellites [92,93] Development of Thin Film Transistor (TFT) by Radio Corporation America (RCA) [94,95] Development of the first Liquid Crystal Display (LCD) [96,97] Implementation of Hydrogenated Amorphous Silicon (a-Si:H) cells on flexible polymers [98] Development of the conjugated polymer "Polyacetylene" [99] Development of a-Si:H/ITO cells on organic polymer Early 1980's [100,101] Invention of Active Matrix Liquid Crystal Displays (AMLCD) in Japan Mid 1980's [100] Organic Light-Emitting Diodes (OLED) display on the flexible substrate [102] Development of a-Si:H/TFT circuit on flexible polyimide [53] Integration of OLED with a-Si TFT on a metal foil [103] Development of a-Si:H TFT on the flexible stainless steel foil [103] Development of Polycrystalline Silicon (Poly-Si) TFT on a plastic substrate [104,105] Implementation of a multilayer inorganic and polymer substrates [106,107] Phillips produced rollable electrophoretic displays [108] Samsung developed a 7" flexible LCD [109] Universal Display Centre and Palo Alto Research Centre presented OLED displays with full colour [110] Development of polymer hybrid material for permeation barriers [111] Development of White Organic Light Emitting Diode (WOLED) displays [112] The development of the first flexible smartphone called paper phone [113] Development of flexible displays on plastic for smartphones [114] Curved OLED Display for 55-inch television and smartphones [115] Flexible paper display for eBooks…”

Section: Advancement In Flexible Materialsmentioning

confidence: 99%

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

et al. 2021

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Flexible substrates have become essential in order to provide increased flexibility in wearable sensors, including polymers, plastic, paper, textiles and fabrics. This study is to comprehensively summarize the bending capabilities of flexible polymer substrate for general Internet of Things (IoTs) applications. The basic premise is to investigate the flexibility and bending ability of polymer materials as well as their tendency to withstand deformation. We start by providing a chronological order of flexible materials which have been used during the last few decades. In the future, the IoT is expected to support a diverse set of technologies to enable new applications through wireless connectivity. For wearable IoTs, flexibility and bending capabilities of materials are required. This paper provides an overview of some abundantly used polymer substrates and compares their physical, electrical and mechanical properties. It also studies the bending effects on the radiation performance of antenna designs that use polymer substrates. Moreover, we explore a selection of flexible materials for flexible antennas in IoT applications, namely Polyimides (PI), Polyethylene Terephthalate (PET), Polydimethylsiloxane (PDMS), Polytetrafluoroethylene (PTFE), Rogers RT/Duroid and Liquid Crystal Polymer (LCP). The study includes a complete analysis of bending and folding effects on the radiation characteristics such as S-parameters, resonant frequency deviation and the impedance mismatch with feedline of the flexible polymer substrate microstrip antennas. These flexible polymer substrates are useful for future wearable devices and general IoT applications.

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Section: Advancement In Flexible Materialsmentioning

confidence: 99%

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

et al. 2021

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“…Such substrate also has poor surface smoothness characteristics and require polishing on surface. 12 The thin films of various polymeric materials such as Polycarbonate (PC), polyethersulfone (PES), polyimide (PI), polyethylene terephthalate (PET), and polyethylene naphthalate (PEN) were also reported as substrates in flexible device fabrication. 13,14 Among them, PET and PENbased substrate were employed more in electronic display devices.…”

Section: Introductionmentioning

confidence: 99%

“…However, it can be used only top emission OLED device architecture where light is emitted from the top rather than the bottom (transparent OLED) due to the opaqueness of the metal foil substrate. Such substrate also has poor surface smoothness characteristics and require polishing on surface 12 …”

Section: Introductionmentioning

confidence: 99%

Disentangled ultrahigh molecular weight polyethylene thin film as a transparent substrate for flexible flat panel display

Shukla

Dey

Singh

et al. 2022

J of Applied Polymer Sci

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The use of polymeric thin film as a substrate material in fabrication of flexible organic light‐emitting diodes (OLEDs) devices is well known. Polyethylene terephthalate (PET) and polyethylene naphtalate (PEN) thin films are used for such purpose commercially. In the present work, 10g of disentangled ultrahigh molecular weight polyethylene (D‐UHMWPE) was processed into 35 ± 5μ thin film by continuous solid state compaction process between two heated rollers of roll mill. The temperature of both rollers was kept at 125°C as well as 128°C and the thin‐film production rate was 1.5 m/min. Subsequently film was studied for substrate application in fabrication of flexible OLEDs. The primary requirement of OLED substrate material namely chemical stability, transparency, and dimensional stability of D‐UHMWPE thin film were studied. D‐UHMWPE film showed excellent chemical stability under various solvents (chloroform, chlorobenzene, dichlorobenzene, acetone, and isopropanol) treatments along with >80% transparency and dimensional stability up to 100 ± 10°C (machine and transverse directions 0.001% and 0% at 90°C and 0.003% and 0% at 110°C). Finally, OLED device was fabricated on D‐UHMWPE surface which showed excellent performance in terms of (light emitting) even when the devices were bended.

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“… Flexible electronics on foil -Flexible storage for wearables, implants, sensors, smart cards and bendable electronics such as organic LEDs, Photo-voltaic cells etc., [8].…”

Section: Introductionmentioning

confidence: 99%

Design Issues of Flexible Antenna -A Review

Pandimadevi¹

2019

IJATCSE

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Recent years has been observed increasing attention from both academic and scientific communities in the field of flexible technology. Flexible antennas have found their importance, when conventional antenna performance is very low because of its peripheral environment. This survey reviews the development of flexible antennas, their design, substrate material used and addresses various bending conditions tested on the antenna finds many applications in military, satellite, medical and defense fields. The antenna should get adjustable to any kind of surfaces. The careful study had been done using current researches going on in the field of flexible antenna technology. Such antennas have merits of compactness, light weight, low profile, cheap and easy to fabricate. Even though there are more survey papers on flexible antenna is available, they are restricted only to particular issues only. So, in this review, a comprehensive survey has been provided which deals with all the issues and challenges of flexible antenna. Thus this review will find out the perfect solution of designing and bending issues of flexible antenna. All the designs presented are of the recent development in flexible technology.

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Flexible organic electronic devices on metal foil substrates for lighting, photovoltaic, and other applications

Cited by 8 publications

References 51 publications

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

Bending Analysis of Polymer-Based Flexible Antennas for Wearable, General IoT Applications: A Review

Disentangled ultrahigh molecular weight polyethylene thin film as a transparent substrate for flexible flat panel display

Design Issues of Flexible Antenna -A Review

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