An Evaluation Framework for Defense Informatization
                    Policy

Jung, Hosang; Lee, Sang-Ho

doi:10.33851/jmis.2020.7.1.73

Cited by 2 publications

(3 citation statements)

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“…[250] Recently Lee et al published an informative review paper describing exciplex hosts for blue phosphorescent OLEDs. [251] Wong et al reported an exciplex forming cohost with biscarbazole donor and a triazine-based acceptor to improve the efficiency and lifetime of fluorescent and phosphorescent OLEDs. [252] Song et al examined the performance RGBY OLEDs by employing an electroplex host system.…”

Section: Materials For Long Lifetime Oledmentioning

confidence: 99%

Approaches for Long Lifetime Organic Light Emitting Diodes

et al. 2020

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Organic light emitting diodes (OLEDs) have been well known for their potential usage in the lighting and display industry. The device efficiency and lifetime have improved considerably in the last three decades. However, for commercial applications, operational lifetime still lies as one of the looming challenges. In this review paper, an in-depth description of the various factors which affect OLED lifetime, and the related solutions is attempted to be consolidated. Notably, all the known intrinsic and extrinsic degradation phenomena and failure mechanisms, which include the presence of dark spot, high heat during device operation, substrate fracture, downgrading luminance, moisture attack, oxidation, corrosion, electron induced migrations, photochemical degradation, electrochemical degradation, electric breakdown, thermomechanical failures, thermal breakdown/degradation, and presence of impurities within the materials and evaporator chamber are reviewed. Light is also shed on the materials and device structures which are developed in order to obtain along with developed materials and device structures to obtain stable devices. It is believed that the theme of this report, summarizing the knowledge of mechanisms allied with OLED degradation, would be contributory in developing better-quality OLED materials and, accordingly, longer lifespan devices.

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Section: Materials For Long Lifetime Oledmentioning

confidence: 99%

Approaches for Long Lifetime Organic Light Emitting Diodes

et al. 2020

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“…8 Lee et al reviewed the use of mixed hosts for obtaining high efficiency and long lifetime OLEDs. 9 They explained the importance of using two hosts. S. A. Jenekhe's group studied various commercially available electron-transport materials by using a mixed host.…”

Section: Introductionmentioning

confidence: 99%

“…The carrier injection and transport in the emitting layer could be relatively easily compared to that in a single host. 9 Both the host molecules were chosen so that their emission overlapped with the absorption of the emitter. 11 This creates a favorable situation for Forster-type energy transfer between the host and the guest.…”

Section: Introductionmentioning

confidence: 99%