Superbroad near to mid infrared luminescence from closo-deltahedral Bi_5 ^3+ cluster in Bi_5(GaCl_4)_3 Cao, Renping ; Peng, Mingying ; Zheng, Jiayu ; Qiu, Jianrong ; Zhang, Qinyuan Abstract Publication: Optics Express Pub Date: July 2012 DOI: 10.1364/OE.20.018505 Bibcode: 2012OExpr..2018505C