[Yuan, Du] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410004, Hunan, Peoples R China.
[Ren, Hao; Edison, Eldho; Yuan, Du; Manalastas, William, Jr.; Srinivasan, Madhavi; Chua, Rodney; Jie, Ernest Tang Jun; Cai, Yi; Yuan, D; Srinivasan, M] Nanyang Technol Univ, Sch Mat Sci & Engn, Block N4-1,50 Nanyang Ave, Singapore 639798, Singapore.
[Zhao, Jin] Nanjing Univ Posts & Telecommun, Sch Mat Sci & Engn, Displays & Inst Adv Mat, Jiangsu Key Lab Organ Elect & Informat, Nanjing 210023, Peoples R China.
[Wong, Ming Wah; Chen, Yingqian] Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore.