Effect of NaCl buffer layer on the performance of organic light-emitting devices (OLEDs) S. W. Shi, D. G. Ma and J. B. Peng Eur. Phys. J. Appl. Phys., 40 2 (2007) 141-144 Published online: 21 September 2007 DOI: 10.1051/epjap:2007133