https://scholars.lib.ntu.edu.tw/handle/123456789/297010
Title: | Fuzzy-junction organic light-emitting devices | Authors: | Chen, C.-W. Cho, T.-Y. CHUNG-CHIH WU Yu, H.-L. TIEN-YAU LUH |
Issue Date: | 2002 | Journal Volume: | 81 | Journal Issue: | 9 | Start page/Pages: | 1570-1572 | Source: | Applied Physics Letters | Abstract: | A "fuzzy-junction" organic light-emitting device (OLED) containing a graded organic-organic interface is reported. Such graded junction is effectively produced utilizing interdiffusion through an ultrathin interfacial fusing layer sandwiched between two functional layers. With a glass transition temperature (Tg) lower than remaining layers, this fusing layer permits smooth interdiffusion and mixing of neighboring layers by annealing above its Tg. With appropriate material combinations, fuzzy-junction OLEDs thus prepared exhibit both reduced voltage and enhanced emission efficiency in comparison with conventional abrupt-junction devices. As an instance, a green fluorescent OLED with such fuzzy junction shows a high peak power efficiency of ∼20 lm/W, substantially higher than ∼14 lm/W of a corresponding abrupt-junction device. © 2002 American Institute of Physics. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-79955998297&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/297010 https://www.scopus.com/inward/record.uri?eid=2-s2.0-79955998297&doi=10.1063%2f1.1502912&partnerID=40&md5=5925717d0bddc853b7a830d602be864d |
ISSN: | 00036951 | DOI: | 10.1063/1.1502912 | SDG/Keyword: | Appropriate materials; Enhanced Emission; Functional layer; Graded junction; High peak power; Organic light-emitting devices; Organic-organic interface; Remaining layers; Ultra-thin; Current density; Light emission; Glass transition |
Appears in Collections: | 化學系 |
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