TY - JOUR JF - opsi JO - ICOP & ICPET _ INPC _ ICOFS VL - 23 IS - 0 PY - 2017 Y1 - 2017/2/01 TI - Annealing Environment Effect on Optical and Electrical Behaviour of Gold Nanostructured Films TT - اثر محیط بازپخت روی رفتار نوری و الکتریکی فیلم های نانوساختار طلا N2 - In this study, gold nanoparticles deposited on glass substrates are investigated. The effect of the ambient environment on the annealing process of the gold nanostructured films is studied. The thermally-induced drastic morphology evolutions are followed by scanning electron microscopy. Results reveal that the changes have a great influence on conductivity, optical and structural properties of the prepared structures. UV-Vis absorption spectra are used to investigate the optical properties. The current-voltage (I-V) measurements are performed using a two point probe instrument. The I-V measurement of the unannealed gold nanostructured film has a linear curve that represents a tunneling process. The conductivity of the annealed film in air environment shows a non-ohmic behavior. Results show that the existence of the stable thin oxide layer in Au2O3 phase in the structure of the annealed film plays an important role in the non-ohmic behavior. Annealing in a vacuum chamber and removing the ambient oxygen gas, the behavior of conductivity remains ohmic and its characteristics could be explained by the morphology-dependent tunneling process. The stable optical and electrical properties of these gold nanostructured films could make them useful for many applications i.e., sensors, high-value resistors, voltage fuse, strain gauges and optoelectronic devices SP - 997 EP - 1000 AU - Ebrahimpour, Zeinab AU - Mansour, Nastaran AD - KW - Gold nanoparticle film KW - Current-voltage measurement KW - Tunneling process KW - Oxide layer KW - Vacuum annealing. UR - http://opsi.ir/article-1-1227-en.html ER -