{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,4]],"date-time":"2025-11-04T10:29:19Z","timestamp":1762252159267,"version":"build-2065373602"},"reference-count":57,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,12,23]],"date-time":"2014-12-23T00:00:00Z","timestamp":1419292800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Adv Funct Materials"],"published-print":{"date-parts":[[2015,2]]},"abstract":"<jats:p>In the architecture described, cuprous oxide (Cu<jats:sub>2<\/jats:sub>O) is tamed to be highly (111) plane oriented nanostructure through adjusting the deposition postulate by glancing angle deposition technique. In the controlled atmosphere oxygen vacancy is introduced into the Cu<jats:sub>2<\/jats:sub>O crystal subsequently fostering an impurity energy state (<jats:italic>E<\/jats:italic><jats:sub>im<\/jats:sub>) close to the conduction band. Our model of Cu<jats:sub>2<\/jats:sub>O electronic structure using density functional theory suggests that oxygen vacancies enhance the electron donating ability because of unshared <jats:italic>d<\/jats:italic>\u2010electrons of Cu atoms (nearest to the vacancy site), allowing to pin the work function energy level around 0.28 eV compared to the bulk. This result is also complemented by Kelvin probe force microscopy analysis and X\u2010ray photoelectron spectroscopy method. Oxygen vacancy in Cu<jats:sub>2<\/jats:sub>O (Cu<jats:sub>2<\/jats:sub>O<jats:sub>1\u2010<jats:italic>\u03b4<\/jats:italic><\/jats:sub>) exhibits promising field emission properties with interesting field electron tunneling behavior at different applied fields. The films show very low turn\u2010on and threshold voltages of value 0.8 and 2.4 V \u03bcm<jats:sup>\u22121<\/jats:sup> respectively which is influenced by the oxygen vacancy. Here, a correlation between the work function modulation due to the oxygen vacancy and enhancement of field emission of Cu<jats:sub>2<\/jats:sub>O<jats:sub>1\u2013<jats:italic>\u03b4<\/jats:italic><\/jats:sub> nanostructure is demonstrated. This work reveals a promising new vision for Cu<jats:sub>2<\/jats:sub>O as a low power field emitter device.<\/jats:p>","DOI":"10.1002\/adfm.201402910","type":"journal-article","created":{"date-parts":[[2014,12,23]],"date-time":"2014-12-23T04:12:56Z","timestamp":1419307976000},"page":"947-956","source":"Crossref","is-referenced-by-count":45,"title":["Efficient Field Emission from Vertically Aligned Cu<sub>2<\/sub>O<sub>1\u2010<i>\u03b4<\/i><\/sub>(111) Nanostructure Influenced by Oxygen Vacancy"],"prefix":"10.1002","volume":"25","author":[{"given":"Suman","family":"Nandy","sequence":"first","affiliation":[{"name":"CENIMAT\/I3N, Departmento de Ci\u00eancia dos Materiais Faculdade de Ci\u00eancias e Tecnologia FCT, Universidade Nova de Lisboa and CEMOP\u2010UNINOVA  2829\u2013516 Caparica Portugal"}]},{"given":"Ranjit","family":"Thapa","sequence":"additional","affiliation":[{"name":"SRM Research Institute SRM University  Kattankulathur 603 203 Chennai Tamil Nadu India"}]},{"given":"Mohit","family":"Kumar","sequence":"additional","affiliation":[{"name":"Institute of Physics  Sachivalaya Marg Bhubaneswar Odisha 751\u2010005 India"}]},{"given":"Tapobrata","family":"Som","sequence":"additional","affiliation":[{"name":"Institute of Physics  Sachivalaya Marg Bhubaneswar Odisha 751\u2010005 India"}]},{"given":"Nenad","family":"Bundaleski","sequence":"additional","affiliation":[{"name":"CeFiTec, Departamento de F\u00edsica Faculdade de Ci\u00eancias e Tecnologia Universidade Nova de Lisboa  P\u20102829\u2010516 Campus de Caparica Caparica Portugal"}]},{"given":"Orlando M. 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