Estimation of the band gap of InPO4

TitleEstimation of the band gap of InPO4
Publication TypeJournal Article
Year of Publication1983
AuthorsWager, J. F., C. W. Wilmsen, and L. L. Kazmerski
JournalApplied Physics Letters
Date Published1983
Keywordselectrons, energy gap, energy losses, experimental data, indium phosphates, layers, mathematical models, photoelectron spectroscopy, sensitivity, spectroscopy, surfaces, thickness, ultraviolet radiation, valence

The band gap of a thin layer of InPO₄ was estimated to be 4.5 eV using a novel approach employing ultraviolet photoelectron spectroscopy and electron energy loss spectroscopy. The technique measures the conduction‐band minimum and valence‐band maximum referenced to the In 4d core line energy. Since this technique is highly surface sensitive, it can be used to measure the band gap of a thin layer. This parameter is difficult to measure in such layers using conventional techniques.

Short TitleAppl. Phys. Lett.