Funding for this research was provided by:
National Natural Science Foundation of China (61471338)
Youth Innovation Promotion Association of the Chinese Academy of Sciences (2015361)
Key Laboratory of Research on Chemistry and Physics of Optoelectronic Materials (QYZDY-SSW-SYS004)
Beijing Nova Program (Z171100001117048)
Beijing science and technology project (Z181100003818019)
Article History
First Online: 2 April 2019
Compliance with ethical standards
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: The authors certify that there is no conflict of interest with any organization for the present work.