%0 Journal Article %T Doped cap layer effect on impurity-free vacancy enhanced disordering in InGaAs/InP quantum well structures %A Yu-Peng An %A Yi-Ding Wang %A Feng Cao %J Optica Applicata %D 2010 %I %X Strong influence on impurity-free vacancy enhanced disordering by the cap layer doping is studied on the InGaAs/InP quantum well structure with a doped cap layer. The observations are consistent with intermixing experiments using both Si3N4 and SiO2 as encapsulation dielectric layers. The largest intermixing occurs in the n-InP capped samples and is explained by the enhancement in out-diffusion of positive ions by the built-in electric field. %K point defects %K interdiffusion %K built-in electric field %U http://www.if.pwr.wroc.pl/~optappl/pdf/2010/no1/optappl_4001p249.pdf