Patent ID: 7592198
Filing Date: 2009-09-22
Classification: H01L,Y02E,Y02P

Abstract:
1. A method for making a photovoltaic cell, comprising: texturing a surface of an inexpensive, multifunctional support; depositing an insulating layer by chemical or physical vapour phase technology on the textured surface of the support; depositing a reflective layer on the deposited insulating layer; depositing at least one first doped amorphous silicon layer by Electron Beam Physical Vapour Deposition on the deposited reflective layer; crystallizing at least a part of the deposited first amorphous doped silicon layer by pulsed electronic beam technology; forming a heterojunction by depositing a second doped amorphous silicon layer on the at least partly crystallized at least one first doped amorphous silicon layer by chemical or physical vapour phase technology; depositing a transparent conductive oxide layer on the deposited second doped amorphous silicon layer by chemical or physical vapour phase technology; depositing a contact gate on the deposited transparent conductive oxide layer to form an assembly comprising the support, the reflective layer, the at least partly crystallized at least one first doped silicon layer, the second doped silicon layer, the transparent conductive oxide layer and the contact gate; encapsulating the formed assembly by atmospheric plasma coating or polymer coating technology; wherein if the at least one doped first amorphous silicon layer contains a P-dopant, the second doped amorphous doped silicon layer contains a N-dopant and if the at least one doped first amorphous silicon layer contains a N-dopant, the second doped amorphous doped silicon layer contains a P-dopant, the inexpensive multifunctional support is a metallic or polymeric substrate, and the depositing a reflective layer is depositing a metal reflective layer by cathodic sputtering or depositing a ceramic reflective layer by reactive cathodic sputtering.