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首页> 外文期刊>Acta Ciencia Indica. Physics >OPTICAL AND ELECTRICAL PROPERTIES OF CDS THIN FILMS BY SPRAY PYROLYSIS AS FUNCTION OF ANNEALED EFFECT
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OPTICAL AND ELECTRICAL PROPERTIES OF CDS THIN FILMS BY SPRAY PYROLYSIS AS FUNCTION OF ANNEALED EFFECT

机译：喷雾热解CDS薄膜的光学和电学性质与退火效应的关系

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摘要

CdS thin films were deposited by spray pyrolysis technique on glass substrate of different thicknesses. Deposited films were annealed in air from 100℃ from two to five hours. The XRD studies revealed that the cadmium chloride and NH_2-CS-NH_2 (Thiourea) of 0.01 M concentration. The reaction mechanisms involve the films were polycrystalline in nature and with hexagonal phase. The source of Cd and S are Cadmium chloride and NH_2-CS-NH_2. preheated glass substrate by Cd~(2+) and S~- in an solution. The crysternality of the films was improved by annealing in air at 100℃. The CdS shows the direct band gap 2.4 eV and indirect bandgap 2.35 eV. The optical transmittances, reflectances and absorption of annealed CdS thin films are studied and found to be different thickness have the same maximum transmitter intensity at same wavelength and the refractive index varies from 2.15 to 2.85 and the electrical resistivity of different thickness in measured have found to be changed. And this result is useful for low cost photosensor devices application.
机译：通过喷雾热解技术在不同厚度的玻璃基板上沉积CdS薄膜。将沉积的薄膜在100℃的空气中退火2至5个小时。 X射线衍射研究表明，氯化镉和NH_2-CS-NH_2（硫脲）的浓度为0.01M。反应机理涉及膜本质上是多晶的并且具有六方相。 Cd和S的来源是氯化镉和NH_2-CS-NH_2。在溶液中通过Cd〜（2+）和S〜-对玻璃基板进行预热。通过在空气中100℃退火可以改善薄膜的结晶性。 CdS显示直接带隙为2.4 eV，间接带隙为2.35 eV。研究了退火后的CdS薄膜的透光率，反射率和吸收率，发现不同厚度的薄膜在相同波长下具有相同的最大发射强度，折射率在2.15至2.85之间变化，并且发现不同厚度的电阻率达到被改变。并且该结果对于低成本的光电传感器设备应用是有用的。

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