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US 10,991,843 B2Granted
Solar cell and method for preparing same
OwnerYoung-Kwon Juninventor
Life of this patent
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Abstract
A method for preparing a solar cell, includes: forming a first electrode on a substrate; forming a light absorbing layer on the first electrode; and forming a second electrode on the light absorbing layer, wherein the method further comprises forming an impurity material layer including an impurity element on the light absorbing layer adjacent to the first electrode or the second electrode in any one side or both sides thereof, and forming a doping layer by diffusing the impurity element into a portion of the light absorbing layer.
Claims11
A method for preparing a solar cell, comprising:
- forming a first electrode on a substrate;
- forming a light absorbing layer on the first electrode;
- forming a second electrode on the light absorbing layer,
- forming an impurity material layer including an impurity element on the light absorbing layer adjacent to the first electrode or the second electrode in any one side or both sides thereof;
- and
- after forming the impurity material layer, forming a doping layer by diffusing the impurity element into a portion of the light absorbing layer through a heat treatment,
- wherein the light absorbing layer is composed of a Cu compound or a Cd compound,
- wherein a p-n junction or an internal electric field layer is formed in the Cu compound or the Cd compound by the doping layer,
- wherein the Cu compound or Cd compound has a binary composition,
- wherein the impurity material layer is composed of a metal oxide containing any one or more of Ti and Si.
7 more elements
Dependencies are inferred from the claim text.