Progress in cell efficiency was designed by Si n(+)p junction/organic layer hybrid. This design comprises the Si solar cell structure with patterned n(+)p junction and heterocycleamine organic layer containing N, S, P, Cl, J atoms. The initial solar cell structure exhibited poor parameters with efficiency of about 4-7% at AMO. The organic layer was grown from aquatic solution at room temperature and appropriate contact time between the solution and the n(+)p Si structure. After the layer deposition, the improvement in the solar cells performance was observed: Is, is doubled, V-oc increased up to 50 mV, FF is increased by 20%, and 15% growth of the efficiency took place. Here we discuss factors resulting in these improvements of the solar cells properties. (c) 2005 Published by Elsevier B.V.