Photovoltaic device

Abstract

A photovoltaic device and a manufacturing method thereof are provided. The photovoltaic device includes: a substrate; a first conductive layer formed on the substrate; P layers and N layers alternately formed along a first direction on the first conductive layer; and I layers covering the P layers and the N layers on the first conductive layer, wherein the P layers and the N layers are separated from each other by a first interval, the I layers are formed between the P layers and the N layers that are separated by the first interval, and the P layers, the I layers, and the N layers formed along the first direction form unit cells.

1 .- 19 . (canceled) 
     
     
         20 . A photovoltaic device, comprising:
 a first cell comprising a lower first conductive layer, a first light absorption layer, and an upper second conductive layer sequentially deposited on a substrate; and   a second cell neighboring the first cell, and comprising a lower second conductive layer, a second light absorption layer, and an upper first conductive layer sequentially deposited on the substrate,   wherein the first light absorption layer and the second light absorption layer are formed at the same layer and are connected to each other.   
     
     
         21 . The photovoltaic device of  claim 20 , wherein
 the lower first conductive layer of the first cell and the lower second conductive layer of the second cell are separated from each other.   
     
     
         22 . The photovoltaic device of  claim 21 , wherein
 the upper second conductive layer of the first cell and the upper first conductive layer of the second cell are formed with the same layer as the first and second light absorption layer, and are electrically disconnected from each other.   
     
     
         23 . The photovoltaic device of  claim 22 , further comprising
 a depletion region formed between the upper second conductive layer of the first cell and the upper first conductive layer of the second cell.   
     
     
         24 . The photovoltaic device of  claim 23 , further comprising
 an electrode portion formed between the upper second conductive layer of the first cell and the upper first conductive layer of the second cell.   
     
     
         25 . The photovoltaic device of  claim 24 , wherein
 the electrode portion comprises protrusions, depressions, and a flat portion, and the width of the flat portion is substantially equal to or less than the width between the lower first conductive layer of the first cell and the lower second conductive layer of the second cell.   
     
     
         26 . The photovoltaic device of  claim 21 , wherein
 the upper second conductive layer of the first cell and the upper first conductive layer of the second cell are formed with the same layer as the first and second light absorption layer, and are separated from each other.   
     
     
         27 . The photovoltaic device of  claim 26 , further comprising
 a non-conductive member formed between the upper second conductive layer of the first cell and the upper first conductive layer of the second cell.   
     
     
         28 . The photovoltaic device of  claim 20 , further comprising
 a first electrode formed between the substrate, and the lower first conductive layer of the first cell and the lower second conductive layer of the second cell.   
     
     
         29 . The photovoltaic device of  claim 28 , further comprising:
 a second electrode formed between the upper second conductive layer of the first cell and the upper first conductive layer of the second cell, and on a portion therebetween.   
     
     
         30 . The photovoltaic device of  claim 29 , wherein
 the two neighboring cells are connected by the first electrode when the first cell and the second cell connected by the second electrode are a pair of cells.   
     
     
         31 . The photovoltaic device of  claim 30 , further comprising
 a depletion region formed with the same layer as the lower first conductive layer and the lower second conductive layer and formed between two neighboring pairs of cells.   
     
     
         32 .- 41 . (canceled)