Prior art

To identify the most relevant prior art for US patent 9,130,074, I will examine the patent citations listed within the patent document itself. Since the full text of the patent is provided, I will directly extract this information from the "Prior Art Citations" or "References Cited" section, which is typically found after the detailed description and before the claims.

Based on the provided patent text, I will identify and describe the cited prior art references.

Prior Art Analysis for US Patent 9,130,074

The US Patent 9,130,074, titled "High-efficiency solar cell structures and methods of manufacture," lists several prior art documents. A thorough analysis of these citations is crucial to understand the scope of the invention and potential anticipation under 35 U.S.C. § 102.

The patent itself references previously filed applications which are incorporated by reference:

1. U.S. Provisional Application No. 61/171,194

   • Full Citation: U.S. Provisional Application entitled “High-Efficiency Solar Cell Structures and Methods of Manufacture,” filed 21 Apr. 2009 and assigned application number 61/171,194.
   • Publication/Filing Date: April 21, 2009.
   • Brief Description: This provisional application is the basis for the current patent and is incorporated by reference in its entirety. It generally discloses high-efficiency solar cell structures and methods of their manufacture.
   • Potential Anticipation: As the foundational provisional application, it would directly anticipate all claims of US 9,130,074 if the claimed subject matter is adequately disclosed within it, as the priority date for the '074 patent is April 21, 2009, based on this provisional application.

2. U.S. Provisional Application No. 61/171,187

   • Full Citation: U.S. Provisional Application entitled “Method for Forming Structures in a Solar Cell,” filed 21 Apr. 2009 and assigned application No. 61/171,187.
   • Publication/Filing Date: April 21, 2009.
   • Brief Description: This application details a method for forming conductive contact/heterocontact patterns on a solar cell surface, involving forming a thin conductive layer and then ablating a majority of it with a laser to leave the pattern. It also covers self-aligned metallization and contact formation through passivation/antireflective layers to a semiconductor layer.
   • Potential Anticipation: This reference could potentially anticipate aspects of claims related to the formation of metal electrodes and their interaction with underlying layers, specifically those mentioned in Claim 1 regarding "providing metallization as electrodes."

3. U.S. Provisional Application No. 61/171,491

   • Full Citation: U.S. Provisional Application entitled “Localized Metal Contacts By Localized Laser Assisted Reduction Of Metal-Ions In Functional Films, And Solar Cell Applications Thereof,” filed 22 Apr. 2009 and assigned application number 61/171,491.
   • Publication/Filing Date: April 22, 2009.
   • Brief Description: This application describes a method for forming electrical contacts in a solar cell layer by selectively modifying a material in the layer using laser irradiation. The remaining regions of the layer can function as transparent, conductive, anti-reflective, and/or passivation films.
   • Potential Anticipation: Similar to the previous provisional application, this reference could anticipate aspects of Claim 1 concerning the "providing metallization as electrodes" step, particularly where the metallization process involves localized modification of a functional film using laser technology.

4. International Patent Application No. PCT/US2010/031874

   • Full Citation: Commonly-assigned, co-filed International Patent Application entitled “Method for Forming Structures in a Solar Cell,” filed as and assigned application number PCT/US2010/031874.
   • Publication/Filing Date: April 21, 2010.
   • Brief Description: This international application is related to the U.S. Provisional Application 61/171,187 and describes methods for forming conductive contact patterns, including laser ablation of a thin conductive layer and self-aligned metallization.
   • Potential Anticipation: As a co-filed application based on one of the provisional applications, this PCT application would also potentially anticipate elements of Claim 1 related to metallization if its content aligns with the earlier provisional.

5. International Patent Application No. PCT/US2010/031881

   • Full Citation: Commonly-assigned, co-filed International Patent Application entitled “Localized Metal Contacts By Localized Laser Assisted Conversion Of Functional Films In Solar Cells,” filed as and assigned application No. PCT/US2010/031881.
   • Publication/Filing Date: April 21, 2010.
   • Brief Description: This international application is related to U.S. Provisional Application 61/171,491 and describes methods for forming localized electrical contacts in functional films of solar cells using selective laser irradiation.
   • Potential Anticipation: Similar to the other co-filed PCT application, this would potentially anticipate aspects of Claim 1 related to "providing metallization as electrodes" and the creation of contacts through selective laser processing.

It's important to note that these are all related applications by the same assignee/inventors and are incorporated by reference, meaning their content forms part of the overall disclosure of US 9,130,074 and influences its priority date and claim scope. For a true prior art search beyond the patent family, one would typically consult the "References Cited by Examiner" section of the patent's front page or a patent database that lists all cited prior art, not just those incorporated by reference by the applicant. However, based on the prompt's instructions and the provided text, these are the direct references given within the patent's description. The independent claim (Claim 1) describes a method of fabricating a solar cell, including steps of depositing layers, thermal treatment, and adding metal electrodes. The mentioned provisional and PCT applications, particularly those related to forming structures and localized metal contacts, would directly bear upon the novelty of the metallization step in Claim 1. The thermal treatment step, which includes crystallizing amorphous silicon, increasing optical transmissivity, activating dopants, and diffusing dopants to form junctions, is a core element of Claim 1 and would be anticipated if disclosed in the incorporated applications.