SOLAR CELL
FIG2 is a schematic cross-sectional view of a solar cell according to another exemplary embodiment of the present invention
Meanwhile, as shown in the solar cell 200 illustrated in FIG2, the I-VII compound photovoltaic layer 110 may further include an undoped I-VII compound layer 113 formed between the first type I-VII compound layers 111 and the second type I-VII compound layers 112. In FIG2, although both of the undoped I-VII compound layer 113 and the undoped silicon layer 123 are formed, only one of the undoped I-VII compound layer 113 and the undoped silicon layer 123 may formed.
schematic cross-sectional view
122
second type silicon layer
121
first type silicon layer
11
130
second electrode
123
undoped silicon layer
100
solar cell
112
type I-VII compound layer type I-VII compound layers
10
Equation
140
electrode
200
solar cell
120
silicon photovoltaic layer
13
following Equation
['1. A solar cell comprising: a I-VII compound photovoltaic layer including a first type I-VII compound layer and a second type I-VII compound layer, the first type I-VII compound layer having a first type impurities, the second type I-VII compound layer having a second type impurities of which polarity is opposite to a polarity of the first type impurities, and the second type I-VII compound layer being disposed under the first type I-VII compound layer; a silicon photovoltaic layer including a first type silicon layer and a second type silicon layer, the first type silicon layer having first type dopants, the second type silicon layer having second type dopants of which polarity is opposite to a polarity of the first type dopants, the first type silicon layer being disposed under the second type I-VII compound layer, and the second type silicon layer being disposed under the first type silicon layer; a first electrode formed under the second type silicon layer; and a second electrode formed on a portion of the first type I-VII compound layer to expose remaining portion of the first type I-VII compound layer;', '5. The solar cell of claim 1, further comprising: an undoped silicon layer between the first type silicon layer and the second type silicon layer.']