We have performed angle-resolved photoemission spectroscopy on a heterostructure consisting of topological insulator Bi 2 Te 3 and iron chalcogenide FeTe fabricated on SrTiO 3 substrate by molecular-beam-epitaxy technique. This system was recently found to show superconductivity albeit non-superconducting nature of each constituent material. Upon interfacing FeTe with two quintuple layers of Bi 2 Te 3 , we found that the Dirac-cone surface state of Bi 2 Te 3 is shifted toward higher binding energy, while the holelike band at the Fermi level originating from FeTe moves toward lower binding energy. This suggests that electron charge transfer takes place from FeTe to Bi 2 Te 3 through the interface. The present result points to importance of hole-doped FeTe interface for the occurrence of unconventional superconductivity.