Zinc oxide and its anion: A negative ion photoelectron spectroscopic study

Abstract

Study of Nb2O y (y = 2-5) anion and neutral clusters using anion photoelectron spectroscopy and density functional theory calculations

The pure rotational spectrum of ZnO in the X1Σ+ and a3Πi states

“…These measurements have confirmed the 1 R + ground state and the presence of a low-lying 3 P i excited state. These results are consistent with theoretical predictions and previous low-resolution experiments [22][23][24][25][26][27][30][31][32].…”

“…The earliest of these investigations was performed by Bauschlicher and Langhoff in 1986 [25], where CPF methods predicted a 3 P excited state lying roughly 0.026 eV above the 1 R ground state; r e and x e were also calculated in this study. Over a decade later, in accompaniment to the PES work done by Fancher et al [22], Bauschlicher and Partridge [26] performed more accurate calculations, which produced a (slightly) higher D 0 , T e , and x e and a shorter r e than the original prediction. Recent calculations by Boughdiri et al, which included spin-orbit interactions [27], resulted in similar values to Bauschlicher and Partridge.…”

“…In 1996, Chertihin and Andrews [21] used FTIR to determine an equilibrium bond length, r e , and fundamental vibrational frequency, x e , for ZnO in a solid argon matrix. Photoelectron spectroscopy (PES) has also been used to measure r e and x e in the X 1 R + and a 3 P i states, as well as the electron affinity, EA, and dissociation energy, D 0 , in the X 1 R + ground state [22][23][24]. The PES studies also produced an estimate of the energy differences between the ground and low-lying excited states.…”

Synthesis of Ni-doped ZnO nanostructures by low-temperature wet chemical method and their enhanced field emission properties

“…The last few decades ZnO has shown one of the most promising materials for FE device. It is because of high thermal stability, low electron affinity, as well as oxidation resistance in harsh environment 26,27 . There are many reports on enhancement of FE from ZnO e.g.…”

ZnO 1-D nanostructures: Low temperature synthesis and characterizations

“…Among the various nanoforms, onedimensional oriented nanostructures such as nanorods, nanowires, nanotubes, nanopins etc are particularly important for efficient field emission that has enormous commercial applications like field emission flat panel displays (Baughman et al 2002), X-ray sources (Senda et al 2004), vacuum microwave amplifiers (Saito and Uemura 2000;Milne et al 2004) etc. With their high melting point, good thermal and chemical stability and low electron affinity (Fancher et al 1998), ZnO one-dimensional arrays are promising alternatives to carbon nanotubes (CNT) for field emitters with long lifetimes. Moreover, the successful demonstration of UV lasing action (Huang et al 2001) from ZnO has added a new direction in the field of nanotechnology and motivated subsequent research for the fabrication of one-dimensional ZnO nanostructured arrays with precise control over size, shape and orientations.…”