Sun, Ying; Chien, Shang-Chieh; Yip, Hin-Lap; Zhang, Yong; Chen, Kung-Shih; Zeigler, David F.; Chen, Fang-Chung; Lin, Baoping; Jen, Alex K.-Y. Chemistry of Materials, 2011 , vol. 23, # 22 p. 5006 - 5015