Yes, you may run these conductors in a cable tray in accordance with NEC 690.31(C)(2).
Cable Tray. Single-conductor PV wire or cable of all sizes or distributed generation (DG) cable of all sizes, with or without a cable tray rating, shall be permitted in cable trays installed in outdoor locations, provided that the cables are supported at intervals not to exceed 300 mm (12 in.) and secured at intervals not to exceed 1.4 m (41/2ft).
By default, the Tigo TS4s are designed to be attached to the frame of the PV module. However, the silver clips may be removed for rail mounting when using frameless modules.
The Tigo TS4 datasheets state that the cables are rated to 1000/1500V.