S. Reineke, Joan Ràfols‐Ribé, P. Will, Christian Hänisch, M. Gonzalez-Silveira, Simone Lenk, J. Rodríguez-Viejo
Organic light-emitting diodes (OLEDs) are an excellent technology for small and large display applications alike and further raise hope to complement solid state lighting in the future. All of these scenarios require OLEDs to operate at their best performance with respect to both wall-plug efficiency and device stability. Given the softness of the organic materials and their virtually unlimited molecular catalogue, this optimization progresses but slowly. In this presentation, we discuss the potential of organic materials processed as so-called ultrastable glasses to improve both efficiency and device lifetime. Ultrastable glasses are formed when the layers are grown by physical vapor deposition on substrates which are held slightly below the glass transition temperature of the respective material. In this study, we selected TPBi as a host material with comparably high Tg of 122 °C [2,2',2"-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)] for four different phosphorescent emitters, i.e. one blue, two green, and one red Ir-complexes). Compared to devices prepared at room temperature, we see significant enhancements of the external quantum efficiency and device lifetime and further, a clear correlation with the growth properties of the glass forming materials, i.e. the host:guest system.
有机发光二极管(oled)是一项出色的技术，适用于小型和大型显示应用，并进一步提高了未来补充固态照明的希望。所有这些场景都要求oled在插拔效率和器件稳定性方面以最佳性能运行。鉴于有机材料的柔软性及其几乎无限的分子目录，这种优化进展缓慢。在这次演讲中，我们讨论了有机材料加工成所谓的超稳定玻璃的潜力，以提高效率和设备寿命。当在略低于相应材料的玻璃化转变温度的衬底上通过物理气相沉积生长层时，形成超稳定玻璃。在这项研究中，我们选择了TPBi作为宿主材料，具有122°C的较高Tg[2,2'，2”-(1,3,5-苯并三基)-三(1-苯基-1- h -苯并咪唑)]，用于四种不同的磷光发射器，即一种蓝色，两种绿色和一种红色ir配合物)。与室温下制备的器件相比，我们看到了外量子效率和器件寿命的显著增强，并且与玻璃成型材料(即主客体系统)的生长特性有明显的相关性。
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Since the 1st OLED TV product came out in the market, OLED has gone through continuous technology development and remarkable achievement. As the one and only OLED TV panel-maker, LG Display is providing a whole new value and differentiated viewing experience with the most innovative OLED products. As the future display trend, OLED is truly changing our lifestyle and creating another future.
{"title":"OLED, the future display is here!","authors":"S. Yeo","doi":"10.1117/12.2324055","DOIUrl":"https://doi.org/10.1117/12.2324055","url":null,"abstract":"Since the 1st OLED TV product came out in the market, OLED has gone through continuous technology development and remarkable achievement. As the one and only OLED TV panel-maker, LG Display is providing a whole new value and differentiated viewing experience with the most innovative OLED products. As the future display trend, OLED is truly changing our lifestyle and creating another future.","PeriodicalId":158502,"journal":{"name":"Organic Light Emitting Materials and Devices XXII","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134019940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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