High Efficiency Exciplex Emitters Using Donor鈥揂cceptor Type Acceptor Material

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• 作者：Chan Seok Oh ; Yu Jin Kang ; Sang Kyu Jeon ; Jun Yeob Lee
• 刊名：Journal of Physical Chemistry C
• 出版年：2015
• 出版时间：October 1, 2015
• 年：2015
• 卷：119
• 期：39
• 页码：22618-22624
• 全文大小：473K
• ISSN：1932-7455

文摘

A design rule of the acceptor material of exciplexes was studied by synthesizing two acceptor materials with only acceptor moieties and with both a donor and an acceptor simultaneously. Molecular calculation and photophysical measurements of the exciplexes revealed that the donor鈥揳cceptor type acceptor materials promoted the exciplex formation by charge transfer character and increased the photoluminescence quantum yield of the exciplexes. The combination of a donor material and the donor鈥揳cceptor type acceptor material achieved a high quantum efficiency of 12.6% in the green exciplex devices.