| 摘要 |
A solar cell which receives an incident light includes a first solar cell element, a second solar cell element and a light-concentrating element. The area of the first solar cell element is smaller than that of the second solar cell element. The second solar cell element is disposed in neighbor to the first solar cell element or the light-concentrating element. At least one portion of energy of the incident light is concentrated to the first solar cell element through the light-concentrating element, and another portion of the energy of the incident light is absorbed by the second solar cell element.
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