Single crystal growth and characterization of superconducting PbSr(Y,Ca)CuO

Metal-Oxide Nanomaterials Synthesis and Applications in Flexible and Wearable Sensors

“…CuO, also called cupric oxide with a narrow band gap energy of 1.2 eV, is a p-type semiconductor that is chemically stable, cost effective, and black in color . Cu 2 O, also called cuprous oxide, is another type of copper oxide with a reddish color and band gap energy of 2–2.17 eV . Additionally, CuO with a C 2/ c space group ( a = 4.683 Å, b = 3.421 Å, and c = 5.129 Å) is attributed to a monoclinic crystal structure where each Cu species is bound to four oxygen atoms in a rectangular parallelogram .…”

“… 81 Cu 2 O, also called cuprous oxide, is another type of copper oxide with a reddish color and band gap energy of 2–2.17 eV. 82 Additionally, CuO with a C 2/ c space group ( a = 4.683 Å, b = 3.421 Å, and c = 5.129 Å) is attributed to a monoclinic crystal structure where each Cu species is bound to four oxygen atoms in a rectangular parallelogram. 83 CuO is dominant for gas sensors, while Cu 2 O has received less attention in gas sensing applications than CuO.…”