Screen printing of upconversion NaYF 下载 ws69325 8 0 PDF 2021-02-22 05:02:06 Li ions affect the upconversion efficiency by changing the local crystal field of the luminescent center. Herein, in order to improve the upconversion efficiency of NaYF 立即下载 微信扫一扫:分享 微信里点“发现”,扫一下 二维码便可将本文分享至朋友圈。