81. Y2O3:Yb3+/Er3+ Hollow Spheres with Controlled Inner Structures and Enhanced Upconverted Photoluminescence. Issue 23 (10th March 2015) Authors: Zong, Lingbo; Xu, Pengfei; Ding, Yunji; Zhao, Kun; Wang, Zumin; Yan, Xuecheng; Yu, Ranbo; Chen, Jun; Xing, Xianran Journal: Small Issue: Volume 11:Issue 23(2015) Page Start: 2768 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗