基金
This work was supported by National Science Foundation of China (No. 51402085), Key Natural Science Foun- dation of Tianjin (No. 12JCZDJC27500), Research Program of Application Foundation of Qinghai Province (No. 2013-Z-701
No. 2013-Z-901) and the ministry of education Chuihui projects (Z2012110).
up-conversion
quantum dots sensitized solar cells
NaYF4