NOVELTY - The multilayer structure comprises a base comprising a substrate layer, a metallic precursor layer formed on the base, and a dopant structure formed on the metallic precursor layer, which comprises group IB and IIIA materials. The dopant structure is a dopant stack comprising a buffer layer formed on the metallic precursor layer, a dopant bearing film formed on the buffer layer and a cap layer formed on the dopant-bearing film, and is a dopant carrier layer comprising group VIA materials and having a thickness of 250-2600 nm.    USE - The multilayer structure is useful to form an absorber layer of solar cells.    ADVANTAGE - The multilayer structure ensures easy and cost-effective formation of absorber layers of solar cells thus providing them with good power conversion efficiencies.    DETAILED DESCRIPTION - The multilayer structure comprises a base comprising a substrate layer, a metallic precursor layer formed on the base, and a dopant structure formed on the metallic precursor layer, which comprises group IB and IIIA materials. The dopant structure is a dopant stack comprising a buffer layer formed on the metallic precursor layer, a dopant bearing film formed on the buffer layer and a cap layer formed on the dopant-bearing film, and is a dopant carrier layer comprising group VIA materials and having a thickness of 250-2600 nm. The buffer layer and the cap layer comprise group VIA materials, and the dopant-bearing film comprises the group IA material. The buffer layer has a thickness of 50-500 nm. The dopant-bearing film has a thickness of 2-100 nm. The cap layer has a thickness of 200-2000 nm. The metallic precursor layer comprises 80% of a metallic phase. An INDEPENDENT CLAIM is included for a process for forming a doped group IB, IIIA and VIA absorber layer on a base.    DESCRIPTION OF DRAWING(S) - The diagram shows a cross-sectional view of a photovoltaic device.    Base substrate (302)    Optional adhesion layer (303)    Back electrode (304)    Transparent conductive layer (309)    Transparent electrode. (310)