Park, Kyung-Soo Choi, Young-Jin Ahn, Myoung-Won Kim, Dong-Wan Sung, Yun-Mo Park, Jae-Gwan Choi, Kyoung Jin 2024-01-20T21:04:55Z 2024-01-20T21:04:55Z 2021-09-03 2009-07 1533-4880 https://pubs.kist.re.kr/handle/201004/132372 We studied the effects of post-annealing in H-2 and O-2 ambients on field-emission properties of vertically-aligned ZnO nanowire arrays synthesized by carbothermal reduction process. The turn-on electric field was dramatically decreased from 3.78 to 2.37 V/mu m after post-annealing in H-2 ambient, which was explained by both hydrogen passivation effects of deep levels and surface modification. In other words, we could observe significant decrease of deep level peak in photoluminescence measurements on hydrogen post-annealed ZnO nanowire array. And also hydrogen-related bonds are strongly increased from X-ray photoelectron spectroscopy measurements. These findings suggest that the concentration of conduction electrons increased by hydrogen post-annealing, which results in the enhanced tunneling probability of conduction electrons into the vacuum. English AMER SCIENTIFIC PUBLISHERS ZINC-OXIDE NANOWIRES ELECTRON-EMISSION THIN-FILMS HYDROGEN PHOTOLUMINESCENCE OXYGEN TEMPERATURE Enhancement of Field-Emission Properties in ZnO Nanowire Array by Post-Annealing in H-2 Ambient Article 10.1166/jnn.2009.M54 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.9, no.7, pp.4328 - 4332 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 9 7 4328 4332 scie scopus 000267994000054 2-s2.0-70350319207 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Proceedings Paper ZINC-OXIDE NANOWIRES ELECTRON-EMISSION THIN-FILMS HYDROGEN PHOTOLUMINESCENCE OXYGEN TEMPERATURE Nanowires Post-Annealing Turn-On Field Field Emission Work Function