有機電致發光器件(OLED)具有優良的發光性能如相應快、亮度高、工作電壓低、因而吸引眾人的注目。現時面積大的OLED，已經被應用於不同的平面顯示器中。OLED的發光機制在於電子和空穴分別從陰陽極注入後，通過在兩電極間的多層有機功能層(空穴注入層HJL，空穴傳輸層HTL，發光層EML，電子傳輸層ETL，電子注入層EJL)在發光分子中結合形成激發子，激子輻射衰變而發光。由於電子和空穴的輸送率一般很難均等，由此造成激發光效率降低。要保持電荷載體的平衡，各功能層的優化是至關重要的。要獲得性能優異的器件，首先要選擇合適的材料。在組成OLED的諸多材料中，有機空穴注入材料的成膜性及其薄膜的熱穩定性和厚 度.....
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The present invention relations to a system and method for providing proximity information, and particularly, although not exclusively, to a system and method for providing proximity information to users in mobile geo-social networks.
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It introduces methods of screening, identifying and isolating HMG-CoAR inhibitors. In particular, said method is useful for screening natural raw products. It also provides potent HMG-CoAR inhibitors for treatment and prevention of diseases and conditions associated with elevated cholesterol and/or .....
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