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On the opportunity of increase of stability degree of parameters and characteristics of IR photoreceivers on the basis of Mo/CdS_(1-x)Se_x

机译:基于Mo / CdS_(1-x)Se_x提高红外光接收器参数和特性稳定性程度的机会

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The processes of photochemical reorganization of deep levels of the photoactive centers in films CdS_(1-x)Se_x (0 ≤ x ≤ 0.8) prepared onto molybdenum substrates by the method of electrochemical deposition were investigated. It is established that thermal annealing of investigated films in air at T_a = 380 / 400℃ for τ_a = 7 / 8 min leads to occurrence of new longwavelength maximum in the photosensitivity spectrum at λ = 0.95 - 1.15 μm (depending on the selenium content), which is due to oxygen-containing photoactive centers forming at disintegration of (V_(Cd) - Cd_i)~+ pairs. The mechanism of formation and disintegration of donor-acceptor pairs have been proposed and basic parameters of complex centers formed at thermal annealing were determined by the method of photocapacitance and photoconductivity spectroscopy.
机译:研究了通过电化学沉积方法在钼衬底上制备的CdS_(1-x)Se_x(0≤x≤0.8)薄膜中深层光活性中心的光化学重组过程。可以确定的是,在空气中T_a = 380/400℃的薄膜在τ_a= 7/8 min时进行热退火会导致在λ= 0.95-1.15μm(取决于硒含量)的光敏光谱中出现新的长波最大值。 ,这是由于在(V_(Cd)-Cd_i)〜+对的分解中形成了含氧光敏中心。提出了供体-受体对的形成和分解机理,并通过光电容和光导光谱法确定了在热退火时形成的复杂中心的基本参数。

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