Li Yongfang
University of California, Santa Barbara
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Publication
Featured researches published by Li Yongfang.
Synthetic Metals | 1998
Li Yongfang; Jun Gao; Deli Wang; Yu Gang; Yong Cao; Alan J. Heeger
Abstract The structure of the frozen p—i—n junction in polymer light-emitting electrochemical cells (LECs) is studied by measurements of the a.c. impedance of LEC devices. Impedance plots of frozen junction LECs show characteristics that are typical of polymer light-emitting diodes. The data demonstrate the ‘freeze-out’ of ionic mobility. The frequency-independent and voltage-independent capacitance of the frozen junction supports the conclusion that the insulating ‘i’ in the p—i—n junction occupies most of the thickness of the LEC polymer layer.
Archive | 2014
Zhang Zhi-Guo; Wang Jizheng; Jin Zhiwen; Li Yongfang
Archive | 2012
Li Hongkun; Yuan Wei; Li Yongfang
Archive | 2016
Li Yongfang; Wang Binbin; Zhang Zhi-Guo
Archive | 2012
He Youjun; Zhao Guangjin; Li Yongfang
Polymer | 2017
He Dingjun; Qiu Lixia; Yuan Jun; Zhang Zhi-Guo; Li Yongfang; Zou Yingping
Organic Electronics | 2017
Zhang Youdi; Guo Xia; Su Wenyan; Guo Bing; Xu Zhuo; Zhang Maojie; Li Yongfang
Archive | 2017
Zhang Zhi-Guo; Bin Haijun; Li Yongfang
Archive | 2017
Zhang Zhi-Guo; Yang Yankang; Li Yongfang
Archive | 2017
Li Yaowen; Xu Guiying; Li Yongfang
