Solar Cell Comprising an Oxide-Nanoparticle Buffer Layer and Method of Fabrication
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Abstract
A buffer layer for protecting an organic layer during high-energy deposition of an electrically conductive layer is disclosed. Buffer layers in accordance with the present invention are particularly well suited for use in perovskite-based single-junction solar cells and double-junction solar cell structures that include at least one perovskite-based absorbing layer. In some embodiments, the buffer layer comprises a layer of oxide-based nanoparticles that is formed using solution-state processing, in which a solution comprising the nanoparticles and a volatile solvent is spin coated onto a structure that includes the organic layer. The solvent is subsequently removed in a low-temperature process that does not degrade the organic layer.
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33 Claims
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1-14. -14. (canceled)
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15. A method for forming an optoelectronic device, the method comprising:
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providing a first organic layer; forming a first buffer layer comprising a first plurality of oxide nanoparticles, wherein the first buffer layer is configured to protect the first organic layer during a sputter-deposition process; and forming a first transparent conductive electrode such that it is disposed on the first buffer layer, wherein the first transparent conductive electrode includes a first layer that is formed via sputter deposition. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for forming an optoelectronic device, the method comprising:
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providing a first organic layer disposed on a substrate, wherein the first organic layer comprises a first perovskite; forming a first buffer layer configured to protect the first organic layer during a sputter-deposition process, the first buffer layer comprising a first plurality of nanoparticles that includes at least one nanoparticle that comprises a wide-bandgap oxide; and sputter depositing a first layer such that it is disposed on the first organic layer, wherein the first layer comprises a first material that is a transparent conductor, and wherein the first layer defines at least a portion of a first transparent conductive electrode. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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Specification