Approaches for Long Lifetime Organic Light Emitting Diodes.
Sujith Sudheendran Swayamprabha,Deepak Kumar Dubey,Shahnawaz,Rohit Ashok Kumar Yadav,Mangey Ram Nagar,Aayushi Sharma,Fu-Ching Tung,Jwo-Huei Jou +7 more
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TLDR
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.Abstract:
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.read more
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Advances in solution-processed near-infrared light-emitting diodes
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Narrowband Emissive Thermally Activated Delayed Fluorescence Materials
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Electroluminescent materials toward near ultraviolet region.
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