Effect of oxygen pressure on structure of Zn1-xAlxO thin film and laser-induced voltages
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1.
Institute of Advanced Materials for Photoelectronics, Kunming University of Science and Technology, Kunming 650051, China
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Corresponding author:
ZHANG Peng-xiang, pxzhang@hotmail.com
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Received Date:
2010-03-08
Accepted Date:
2010-04-06
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Abstract
In order to study the influence of annealing oxygen pressure on crystalline and laser-induced voltages (LIV) of Al-doped ZnO thin film, it was prepared on sapphire(0001) single crystal substrates by means of pulsed laser deposition technology. Then the micro-structure of the thin film was determined by means of X-ray diffraction (XRD). The corresponding LIV signals were detected with these thin film illuminated by ultraviolet pulsed laser. The results were theoretically analyzed and experimentally validated. The results indicated that c-axis oriented thin film was produced and the optimal generation conditions were determined. Meanwhile, the results showed that the both ends of the film would induce LIV and its maximal value was 0.532V when the film was irradiated by laser with wavelength of 248nm, pulse bandwidth of 20ns. With the annealing oxygen pressure increasing, the peak LIV increases at first and then decreases. It is helpful to in the application of the film in ultraviolet detectors
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References
|
[1]
|
SHIH W Ch，HUANG R Ch.Fabrication of high frequency ZnO thin film SAW devices on silicon substrate with a diamond-like carbon buffer layer using RF magnetron sputtering[J].Vacuum，2009，83(3)：675-678. |
|
[2]
|
LIU Y S，WANG L W，LI W Q，et al.Pulsed laser deposited zinc oxide films for surface acoustic wave applications[J].Journal of Functional Materials，2001，32(1)：78-90(in Chinese). |
|
[3]
|
WEI Ch L，CHEN Y Ch，CHENG Ch Ch，et al.Highly sensitive ultraviolet detector using a ZnO/Si layered SAW oscillator[J].Thin Solid Films，2010，518(11)：3059-3062. |
|
[4]
|
HUANG H H，CHU Sh Y，KAO P Ch，et al.Enhancement of hole-injection and power efficiency of organic light emitting devices using an ultra-thin ZnO buffer layer[J].Journal of Alloys and Compounds，2009，479(1/2)：520-524. |
|
[5]
|
DAI L P，DENG H，CHEN G，et al.Ultraviolet emission properties of ZnO film with zinc deficiency by SS CVD[J].Applied Surface Science，2008，254(6)：1599-1603. |
|
[6]
|
WANG S M，XIA G D，SHAO J D，et al.Structure and UV emission of nanocrystal ZnO films by thermal oxidation of ZnS films[J].Journal of Alloys and Compounds，2006，424(1/2)：304-306. |
|
[7]
|
HAN W S，KIM Y Y，KONG B H，et al.Ultraviolet light emitting diode with n-ZnO:Ga/i-ZnO/p-GaN:Mg heterojunction[J].Thin Solid Films，2009，517(17)：5106-5109. |
|
[8]
|
YANG X J，TANG Y X，YU M，et al.Pulsed laser deposition of aluminum tris-8-hydroxyquinline thin films[J].Thin Solid Films，2000，358(1/2)：187-190. |
|
[9]
|
CHEN Ch Zh，BAO Q H，YAO Sh Sh，et al.Pulsed laser deposition and its application[J].Laser Technology，2003，27(5)：443-446(in Chinese). |
|
[10]
|
XIONG F，ZHANG H，YANG Y L，et al.Decay time of laser-induced thermoelectric voltage signals[J].Laser Technology，2009，33(3)：307-309(in Chinese). |
|
[11]
|
ZHANG P X，LI G Zh，ZHANG Y，et al.Room temperature light-thermo-detector made of high Tc superconductors[J].Acta Physica Sinica,1998，7(11)：810-816(in Chinese). |
|
[12]
|
ZHANG P X，WEN X M，GU M M，et al.YBa2Cu3O7- thin film room-temperature laser power meter[J].Chinese Journal of Laser，2002，A29(3)：205-208(in Chinese). |
|
[13]
|
ZHANG P X，WANG Ch，ZHANG G Y，et al.LaCaMnO3 thin film laser energy/power meter[J].Optics and Laser Technology，2004，36(4)：341-343. |
|
[14]
|
ZHAO J，HU L Zh，WANG Zh Y，et al.ZnO thin films on Si(111) grown by pulsed laser deposition from metallic Zn target[J].Applied Surface Science，2006，253(2)：841-845. |
|
[15]
|
HABERMEIER H U，LI X H，ZHANG P X，et al.Anisotropy of thermoelectric properties in La2/3Ca1/3MnO3 thin films studied by laser-induced transient voltages[J].Solid State Communications，1999，110(9)：473-478. |
|
[16]
|
SUN Ch W，LIU Zh W，ZHANG Q Y.Influence of annealing temperature on the micro structure and photoluminescence of ZnO films[J].Acta Physica Sinica,2006，55(1):430-436(in Chinese). |
|
[17]
|
ZHANG P X，LEE W K，ZHANG G Y.Time dependence of laser-induced thermoelectric voltages in La1-xCaxMnO3 and YB2C3O7- thin films[J].Applied Physics Letters，2002，81(21)：4026-4028. |
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