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Title:

Doping-Dependent Adsorption and Photon-Stimulated Desorption of CO on GaN(0001)

Author(s):
Kollmannsberger, Sebastian L.; Walenta, Constantin A.; Winnerl, Andrea; Weiszer, Saskia; Pereira, Rui; Tschurl, Martin; Stutzmann, Martin; Heiz, Ueli
Abstract:
CO is used as a chemical probe molecule to elucidate the properties of differently n-type doped GaN(0001) surfaces under ultrahigh vacuum conditions. Doping-dependent sticking of CO is observed by temperature-programmed desorption, which is not influenced by the surface composition of the semiconductor substrates. By the excitation of the semiconductor with UV photons a low-temperature desorption of CO is stimulated. The absolute photon-stimulated desorption intensity strongly depends on the sur...     »
Journal title:
J. Phys. Chem. C
Year:
2017
Journal volume:
121
Journal issue:
15
Pages contribution:
8473-8479
Fulltext / DOI:
doi:10.1021/acs.jpcc.7b01570
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