Employing Heavy Metal-Free Colloidal Quantum Dots in Solution-Processed White Light-Emitting Diodes Zhang, Yu ; Xie, Chuang ; Su, Huaipeng ; Liu, Jie ; Pickering, Shawn ; Wang, Yongqiang ; Yu, William W. ; Wang, Jingkang ; Wang, Yiding ; Hahm, Jong-In ; Dellas, Nicholas ; Mohney, Suzanne E. ; Xu, Jian Abstract Publication: Nano Letters Pub Date: February 2011 DOI: 10.1021/nl1021442 Bibcode: 2011NanoL..11..329Z