NOVELTY - Method for integrating a thin-film solar cell involves providing a growth substrate, depositing protection layer(s), sacrificial layer, photoactive cell in inverted manner in order, forming a patterned metal layer, bonding the patterned metal layer to a metalized surface of a plastic sheet, etching the sacrificial layer to form thin film solar cells, fabricating compound parabolic concentrators, and transferring thin-film solar cells onto the thermoformed compound parabolic concentrators to form an integrated thin film solar cell and compound parabolic concentrator.    USE - Method for integrating thin-film solar cell for photovoltaic device (claimed).    ADVANTAGE - The method enables economically integrating thin-film solar cell having high efficiency and reduced plastic content.    DETAILED DESCRIPTION - Method for integrating a thin-film solar cell with non-tracking miniconcentrator involves providing a growth substrate, depositing protection layer(s) on the growth substrate, depositing sacrificial layer on protection layer, depositing a photoactive cell in inverted manner on the sacrificial layer, forming a patterned metal layer comprising a multi-element structure arrays on the photoactive cells by a photolithography method, bonding the patterned metal layer to a metalized surface of a plastic sheet, etching the sacrificial layer to remove the photoactive cell from the growth substrate to form thin film solar cells, fabricating compound parabolic concentrators from a plastic material using thermoforming process, and transferring thin film solar cells onto the thermoformed compound parabolic concentrators by an adhesive-free bonding step to form an integrated thin film solar cell and compound parabolic concentrator. An INDEPENDENT CLAIM is included for photovoltaic device.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view explaining the fabrication flow for the plastic mini-circular plastic connectors through vacuum-assisted thermoforming technique.