کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10727862 | 1037751 | 2013 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modulation of the work function of fullerenes C60 and C70 by alkali-metal adsorption: A theoretical study
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Modulation of the work function of fullerenes C60 and C70 by alkali-metal adsorption: A theoretical study Modulation of the work function of fullerenes C60 and C70 by alkali-metal adsorption: A theoretical study](/preview/png/10727862.png)
چکیده انگلیسی
The impact of alkali-metal (Li/Na/Cs) adsorption on work function of fullerenes C60 and C70 was investigated by first-principles calculations. After adsorption, the work functions of fullerenes C60 and C70 decrease distinctly and vary linearly with the electronegativity of the alkali metal elements, and the positions where the alkali atoms are adsorbed considerably influence the work functions. On the contrary, a vacancy defect elevates the work functions of the fullerenes C60 and C70. The variation in the work functions rests with variation in Fermi level (which are attributed to charge transfer) and variation in vacuum levels (which are attributed to the induced dipole moments). Moreover, alkali-metal adsorption can also improve the electric conductivity of a fullerene mixture of C60 and C70.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 377, Issue 38, 15 November 2013, Pages 2676-2680
Journal: Physics Letters A - Volume 377, Issue 38, 15 November 2013, Pages 2676-2680
نویسندگان
Hong Liang, Shunfu Xu, Weihui Liu, Yueqiang Sun, Xiangfa Liu, Xinqing Zheng, Sen Li, Qiang Zhang, Ziliang Zhu, Xiaochun Zhang, Chengguo Dong, Chun Li, Guang Yuan, Hitenori Mimura,