Extremely low color-temperature white organic electroluminescence devices based on the control of exciton recombination zone

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• 作者：Weiling Li ; Chang Sun ; Lianqiao Yang ; Wenqing Zhu ; Hao Zhang ; Miao Cai ; Xiaowen Zhang and Bin Wei
• 刊名：physica status solidi (a)
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：213
• 期：9
• 页码：2400-2405
• 全文大小：1609K
• ISSN：1862-6319

文摘

We reported high-performance organic light-emitting diodes (OLEDs) with a maximum efficiency of 42.3 lm W⁻¹ and color rendering index of 92 by facilitating charge carrier transportation and controlling the recombination zone. In addition, we demonstrated that inserting a thin interlayer in emitting layer prevented energy transfer between blue and green emission layers, providing a relative chromatic-stability OLEDs. Furthermore, the device also exhibit a rather low correlated color temperature (2202 K), corresponding to an excellent warm WOLED, which could meet the special requirement of energy saving and environment protection.