NOVELTY - Solar cell sub-module (100) comprises elongated solar cells (101) mounted in a structure that maintains the solar cells in a longitudinally parallel and coplanar configuration. The structure provides conductive pathway(s) electrically interconnecting the solar cells.    USE - For photovoltaic device, linear concentrator system, or solar power module.    ADVANTAGE - The mounting structure prevents damage to the elongated solar cells or electrical connections resulting from thermal cycling during manufacture or use. When use in concentrator application, the inventive solar cell sub-module controls series resistance, manages the problems associated with uneven illumination across the width of a receiver, and minimizes wasted space between rows and cells.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (a) a photovoltaic device including the above solar cell sub-module(s), and a reflector mounted behind the solar cell sub-module to reflect light passing through gaps between the solar cells back towards the solar cells to improve the efficiency of photovoltaic device;    (b) formation of solar cell sub-module by mounting elongated solar cells in a structure that maintains the solar cells in a longitudinally parallel and co-planar configuration, and establishing conductive pathway(s) extending through the structure to electrically interconnect the solar cells;    (c) a substrate release process including receiving a wafer comprising elongated substrates interconnected by lateral wafer frame portions, and proximal and distal wafer frame portions; removing at least one of the proximal and distal wafer frame portions to expose a face of a corresponding one of the substrates; engaging at least one of the lateral wafer frame portions to secure the substrates, without engaging the edges of elongated substrates; applying elongated substrate-engaging mechanisms to the exposed face of exposed elongated substrate to engage the exposed elongated substrate; and moving the substrate-engaging mechanisms away from the substrates to release the exposed elongated substrate from the remaining elongated substrates;    (d) an elongated substrate dispensing process including providing mutually spaced elongated substrate storage bins, each storing a stack of elongated substrates, where the spacing between the substrate storage bins is selected to provide a desired spacing of substrates in a solar cell sub-module to be assembled from the stored elongated substrates;    (e) an elongated substrate handling system comprising an elongated substrate-dispensing unit for storing and dispensing stack(s) of elongated substrates, and an alignment jig having mutually spaced slots for receiving respective elongated substrates dispensed from the storage unit;    (f) formation of electrical connection in a photovoltaic module by attaching an electrical conductor to mutually spaced locations of a support, where the electrical conductor defines an indirect path between the locations to accommodate different rates of thermal expansion of electrical conductor and support, and to maintain an electrical connection between the locations;    (g) an electrical connector for a photovoltaic module;    (h) a system for forming electrical connectors for a photovoltaic module, comprising a pair of rotating rollers having mutually opposed projections and recesses adapted to deform a length of an electrically conductive substance fed between the rollers to define an indirect path between at least two mutually spaced attachment locations along the length to accommodate different rates of thermal expansion of the electrically conductive substance and a support, and to maintain an electrical connection between the attachment locations when part(s) of the length of conductive substance is attached to the support at mutually spaced attachment locations;    (i) a linear concentrator system comprising solar cell sub-modules;    (j) a sliver removal process including receiving mutually spaced sliver solar cells interconnected by wafer frame portion(s), each sliver solar cell having outwardly facing edges with respective polarities and solar cell faces perpendicular to the edges; and releasing the sliver solar cells from the wafer frame portions in simultaneous manner while maintaining the relative orientation of the solar cell edges to provide released sliver solar cells whose edges of selected polarity have the same orientation;    (k) a sliver removal apparatus comprising a clamp having two opposing portions for engaging respective edges or connecting portion(s) of mutually spaced slivers, where the two opposing portions include alignment slots for receiving respective guides of a sliver storage device in a direction transverse to longitudinal axes of slivers;    (l) a sliver removal clamp having two opposing portions for engaging connecting portions of mutually spaced slivers; and    (m) a storage apparatus for storing elongated substrates in a stacked configuration, comprising a translation mechanism for translating a stack of stored substrates to allow receipt of a subsequently received substrate for storage    .    DESCRIPTION OF DRAWING(S) - The figure shows a schematic plan view of the solar cell sub-module.    Solar cell sub-module (100)    Solar cells (101)    Crossbeams (102)