Studies of ambient dependent electrical behavior of nanocrystalline SnO2 thin films using impedance spectroscopy

Abstract

Microstructural, electrical, and optical properties of SnO 2 nanocrystalline thin films grown on InP (100) substrates for applications as gas sensor devices

Room Temperature Ammonia and Humidity Sensing Using Highly Ordered Nanoporous Alumina Films

“…In the equivalent circuit models R 1 and R 2 represent two frequency independent resistors in parallel with dispersive frequency dependent capacitors, C n1 (ω) and C n2 (ω) respectively [49]. These non-Debye capacitances can be expressed in a general form as C n (ω) = B n (iω) n-1 where B n is a constant for a given set of experimental conditions and n takes the value between 0 and 1 according to the local microscopic environment through which charge transport takes place [13,49,50]. B n behaves as an ideal frequency independent capacitor as n approaches 1, and an ideal conductance when the value of n approaches 0 [45].…”

“…Most humidity detection studies have focused on the use of polymer [1,[5][6][7][8] and ceramic materials [3,[9][10][11][12][13][14][15][16][17][18][19][20] due to their low cost and excellent performance. Ceramic humidity sensors are commercially available, and offer major advantages with high resistance to chemical attack, thermal stability, mechanical strength, and quick response.…”

Влияние плотности энергии на мишени на свойства пленок SnO-=SUB=-2-=/SUB=- : Sb при использовании скоростного сепаратора частиц

“…Увеличения электронной проводимости пленок SnO 2 можно добить-ся легированием различными примесями и применением постростового отжига. Пленки оксида олова, легирован-ные сурьмой, выращивают разными методами, такими как струйный пиролиз [6,7], химическое осаждение из газовой фазы [8,9], золь−гель метод [10], магнетрон-ное распыление [11], импульсное лазерное осаждение (ИЛО) [5] и др. Метод ИЛО обладает некоторыми преимуществами по сравнению с другими методами по-лучения многокомпонентных оксидных тонких пленок.…”

Effect of Mn Concentration on the Structural and Optical Properties of SnO2 Thin Films Prepared By pulse laser deposition

“…This consistent with Adawiya J. Haider et al [22] (a) Table (2) Morphological characteristics of the SnO 2 :Mn /glass thin films deposited at different doping concentration at Oxygen pressure 10 -2 mbar and 700mJ/cm 2 laser fluence at 473 K SnO 2 thin films were successfully deposited onto glass substrate and the films were very transparent. This may be attributed by the formation of the Fermi level in the conduction band [11].The absorption coefficient (α) and incident photon energy (hν) is related by the following equation [3] (α hν) 2 …”

“…Doped tin oxide (SnO 2 ) films have been widely used as transparent conducting electrodes in many optoelectronic and electro-optic devices such as solar cells [2,3] and flat panel displays [4,5] due to their high electrical conductivity and high optical transmittance in the visible, and high infrared reflectance. There are numerous deposition techniques used to grow SnO 2 films (either doped or undoped) including chemical vapor deposition (CVD) [6,7], spray pyrolysis [8,9], thermal evaporation [10], sol-gel [11] and sputtering [12,13,14]. Other techniques, such as pulsed laser deposition (PLD) might be used to achieve high-quality SnO 2 films; however, the growth of Mn-doped SnO 2 films by PLD has not yet been reported.…”