Eaidkong, Thichamporn; Mungkarndee, Radeemada; Phollookin, Chaiwat; Tumcharern, Gamonwarn; Sukwattanasinitt, Mongkol; Wacharasindhu, Sumrit Journal of Materials Chemistry, 2012 , vol. 22, # 13 p. 5970 - 5977