A study of the CuO phase formation during thin film deposition by molecular beam epitaxy

Oxidation mechanism of thin Cu films: A gateway towards the formation of single oxide phase

“…Various growth techniques have been employed for device quality copper oxides formation such as, sol-gel process, 24 spray pyrolysis, 25 solution growth, 26 chemical vapour deposition (CVD), 27 pulsed laser deposition (PLD) 28 and DC and RF magnetron sputtering, [29][30][31][32] molecular beam epitaxy (MBE), 33 anodic and chemical oxidations, 34,35 and electrochemical deposition. [36][37][38] These growth techniques generally require some special growth conditions, however, still results in a mixed oxide phases.…”

Formation of Cu x clusters in Cu/ZnO nanocomposites studied by IR spectroscopy

“…The absorption band observed at around 655 cm -1 was assigned to the symmetric stretching mode of Cu(O2), 2A" with C 2n symmetry by several workers [20][21][22][23]. The absorption detected at around 530 cm -1 was generally assigned to the symmetric stretching vibration of Cu-O bond of the CuOO molecule [24][25][26]. The last absorption band appeared close to 800 cm -1 was assigned to the vibration of Cu-O bond in the CuO 3 molecules [24,26].…”

Investigations of Cuprous Oxide and Cupric Oxide Thin Films by Controlling the Deposition Atmosphere in the Reactive Sputtering Method

“…(iii) The raw materials for making Cu 2 O and CuO thin films are readily available and the oldest semiconducting materials known to solid-state physicists, and using them to fabricate solar cells will be low-cost; (7) (iv) The preparation process for photovoltaic thin films is easy and simple. (8)(9)(10)(11)(12) CuO is also an interesting candidate for application to solar energy conversion devices, superconducting devices, (13) gas sensors, (14) and material sensors. (15)(16)(17)(18) CuO (monoclinic) is reported to possess n-type conductivity with band-gap values (E g values) of 1.9-2.1.…”

“…(10) Muthe et al used an electronbeam heated source as a deposition technique and Cu 2 O thin films could be grown with relative ease by maintaining the atomic oxygen flux at 1.6 times the stoichiometric value. (8) Thermal oxidation is a simple and low-cost technique to prepare copper oxide thin films with different crystalline phases. (11,20) Siripala et al found that annealing below 300 °C enhanced the n-type photocurrent produced by the junction.…”