Radially stacked solar cells based on 2D atomic crystals and methods for their production
First Claim
1. A solar cell, comprising:
- a barrier layer;
a plurality of nanospheres positioned on the barrier layer, wherein the plurality of nanospheres comprise silicon dioxide;
a heterostructure wherein;
the heterostructure comprises a first light absorbing layer and at least a second light absorbing layer attached to the first light absorbing layer; and
the plurality of nanospheres are positioned between the barrier layer and the heterostructure; and
a heterojunction at an interface between the first light absorbing layer and the second light absorbing layer,wherein the barrier layer, the first light absorbing layer, and the second light absorbing layer form a spiral structure having a spiral shape.
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Accused Products
Abstract
A solar cell for collecting solar radiation can include a barrier layer such as a dielectric barrier layer and a heterostructure including a first light absorbing layer and at least a second light absorbing layer. A method for forming the solar cell can include forming a sacrificial layer on a support substrate and forming the barrier layer on the sacrificial layer. The barrier layer is formed to have a strain gradient through its thickness. The heterostructure is attached to the barrier layer and the sacrificial layer is removed, thereby separating the barrier layer and the heterostructure from the support substrate. During the removal of the sacrificial layer, the strain gradient causes the barrier layer and heterostructure, to roll, curl, or spiral, thereby resulting in a radially stacked heterostructure that provides a light concentrating optical cavity having multiple light absorbing layers with different band gaps.
8 Citations
13 Claims
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1. A solar cell, comprising:
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a barrier layer; a plurality of nanospheres positioned on the barrier layer, wherein the plurality of nanospheres comprise silicon dioxide; a heterostructure wherein; the heterostructure comprises a first light absorbing layer and at least a second light absorbing layer attached to the first light absorbing layer; and the plurality of nanospheres are positioned between the barrier layer and the heterostructure; and a heterojunction at an interface between the first light absorbing layer and the second light absorbing layer, wherein the barrier layer, the first light absorbing layer, and the second light absorbing layer form a spiral structure having a spiral shape. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification