OLED Encapsulation Technology

Shin, Young‐Hoon

doi:10.1002/9781119161387.ch9

Cited by 2 publications

(10 citation statements)

References 3 publications

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“…OLEDs are known to be extremely sensitive to moisture, requiring a water vapor transmission rate (WVTR) of the order 10 –6 g/m 2 /day, which is lower than the sensitivity limit of common commercial WVTR measurement instruments (order of 10 –4 g/m 2 /day) and significantly lower than the WVTR needed for liquid crystal displays and photovoltaics . As a consequence, OLEDs require high quality sealing with a low WVTR material, and the packaging commonly contains a cavity with a desiccant . The inner cavity can be filled with inert gas (edge seal) or filled with resin, where a passivation layer is typically needed .…”

Section: Lessons Learned From Other Technologiesmentioning

confidence: 99%

“…Multiple cavity structures (Russian doll architecture) can also be used, but this would inevitably increase the cost. In resin-filled encapsulation, due to the absence of desiccant and insufficient barrier properties of resin, typically an additional passivation layer deposited on top of the devices is needed for moisture protection . In addition, film-based encapsulation, consisting of alternating layers of organic and inorganic layers, is of interest for flexible display applications …”

Section: Lessons Learned From Other Technologiesmentioning

confidence: 99%

“…In resin-filled encapsulation, due to the absence of desiccant and insufficient barrier properties of resin, typically an additional passivation layer deposited on top of the devices is needed for moisture protection. 15 In addition, filmbased encapsulation, consisting of alternating layers of organic and inorganic layers, is of interest for flexible display applications. 15 OPV devices share similar approaches to encapsulation as OLEDs, with the difference being that cover glass rather than a metal cap is typically used.…”

Section: Oleds and Opvsmentioning

confidence: 99%

“…15 In addition, filmbased encapsulation, consisting of alternating layers of organic and inorganic layers, is of interest for flexible display applications. 15 OPV devices share similar approaches to encapsulation as OLEDs, with the difference being that cover glass rather than a metal cap is typically used. 16 Also similar to OLEDs, there is a lot of interest in the development of film-based encapsulation, which includes various thin film barrier solutions developed for OLEDs, such as Cytop, ORMOCER, ORMOSIL, etc.…”

Section: Oleds and Opvsmentioning

confidence: 99%

“…POE is of interest as a replacement for EVA, due to the fact that it does not produce acetic acid, can result in faster lamination processes, and results in lower potential induced degradation (PID). 20 PID was reported to depend on the resistivity of the encapsulant, which can range between 10 13 and 10 15 for EVA and 10 13 and 10 17 for POE. 20 Properties of common encapsulant materials are listed in Table 1.…”

Section: Commercial Pvmentioning

confidence: 99%

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Encapsulation and Stability Testing of Perovskite Solar Cells for Real Life Applications

et al. 2022

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With the progress in the development of perovskite solar cells, increased efforts have been devoted to enhancing their stability. With more devices being able to survive harsher stability testing conditions, such as damp heat or outdoor testing, there is increased interest in encapsulation techniques suitable for this type of tests, since both device architecture compatible with increased stability and effective encapsulation are necessary for those testing conditions. A variety of encapsulation techniques and materials have been reported to date for devices with different architectures and tested under different conditions. In this Perspective, we will discuss important factors affecting the encapsulation effectiveness and focus on the devices, which have been subjected to outdoor testing or damp heat testing. In addition to encapsulation requirements for these testing conditions, we will also discuss device requirements. Finally, we discuss possible methods for accelerating the testing of encapsulation and device stability and discuss the future outlook and important issues, which need to be addressed for further advancement of the stability of perovskite solar cells.

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Section: Lessons Learned From Other Technologiesmentioning

confidence: 99%

Section: Lessons Learned From Other Technologiesmentioning

confidence: 99%