Photoconductivity in Ag₂O

Abstract

The spectral distribution of photoconductivity in Ag2O was measured on samples prepared in three different ways. The photoresponse was found to depend on the mode of preparation of samples and on previous light exposure. Samples prepared by pressing Ag2O powder against a cellulose backing showed a photoconductive peak around 0.9 μm, while thin Ag2O layers prepared by cathodic sputtering of silver in an oxygen atmosphere behaved like the ideal photoconductors: flat response in the visible and exponential decrease from 0.8 μm to longer wavelengths. Some infra‐red optical absorption and electrical conductivity measurements were also made. The results are compared to the behaviour of Cu2O, silver oxide's only structural analogue.

Recent developments in the emerging field of crystalline p-type transparent conducting oxide thin films

“…19). In 2 O 3 is a well-known n-type TCO with a bandgap (E g ) of 3.7 eV, whereas Ag 2 O is a p-type semiconductor with a smaller E g of w1.2 eV [138]. However, a mixture of these two materials with Ag 2 O contents of 40 to 60 wt% showed p-type conduction.…”

Structure, conductivity, and optical absorption of Ag2−xO films

“…However, each of these studies prepares the Ag 2 O and determines the band gap in different ways. Fortin et al [24] press Ag 2 O powder into cellulose backing and examine it by spectrophotometry and photoconductivity to deduce a 1.2 eV gap. Tjeng et al [12] oxidize a Ag surface in a cold-dischargemagnetically confined free radical oxygen source and determine the band gap to be 1.3 eV from valence band photoemission and conduction band bremsstrahlung isochromat spectroscopy.…”

Electrical Conduction of Organic Thin Film with Copper/Thiol-based Self-Assembled Monolayer Anode

“…Therefore, it is inevitable that the surface of metal anode is oxidized. Ag 2 O is reported to show p-type semiconducting properties and its work function is 4.8-5.1 eV [8][9][10][11]. We think that the oxidation of Ag little influences the work function of our evaporated Ag thin film.…”