Mönig, H.; Lockhorn, D.; Aghdassi, N.; Timmer, A.; Kaufmann, C.; Caballero, R.; Zacharias, H.; Fuchs, H.: Heat Induced Passivation of CuInSe2 Surfaces: A Strategy to Optimize the Efficiency of Chalcopyrite Thin Film Solar Cells? Advanced Materials Interfaces 1 (2014), p. 1300040/1-7
10.1002/admi.201300040

Abstract:
Attosecond time-resolved XUV streaking experiments are reported for cleaved WSe2 surfaces. The photoemission from Se 3d and W 4f core levels occurs delayed by 50 as with respect to the valence band emission.