Optimization of the Parameters of PbSB-based Polycrystalline Photoresistors

Miroshnikov, B. N.; Мирошникова, И. Н.; Popov, A. I.

doi:10.1134/s1063782618020082

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…As mentioned at the beginning of the article, oxygen in heavy metal sulphides plays a special role: forming deep recombination levels, it changes the main characteristics of photodetectors: dark resistance, relaxation time, sensitivity, and specific detectability [11]. However, as was shown in [12], oxygen adsorbed by the surface can also change the characteristics of the phase transition, creating shallow acceptor-type traps. By changing their concentration in photosensitive layers based on PbS, one can change the parameters and characteristics of photodetectors over a wide range.…”

Section: CDmentioning

confidence: 95%

Morphology and Composition of Lead-Cadmium Sulfide Photo-Sensitive Films

Мирошникова

Маскаева²,

Miroshnikov³

et al. 2020

NHC

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CdxPb1-xS films with a thickness of 620 and 680 nm were prepared by chemical precipitation from a reaction mixture containing lead salt, thiourea, alkali and cadmium acetate. The concentration of cadmium acetate was 0.01 and 0.1 mol/l. Electron-microscopic studies showed a fundamental difference in the morphology of the CdxPb1-xS thin films with a 10-fold difference in the concentration of cadmium acetate in the reaction bath. The results of energy dispersive analysis indicate the nonstoichiometry of the synthesized films on sulfur. Auger spectrometry revealed a high content of oxygen in the surface layer of the thin film coating CdxPb1-xS (up to 10 and 40 at. %). In the sample obtained from the reaction bath containing 0.01 mol / l of cadmium acetate, after ion etching at a depth of more than 30 nm, no oxygen was detected. In a sample prepared with a cadmium acetate content of up to 0.1 mol/l, the oxygen content does not exceed 3 at. %

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Section: CDmentioning

confidence: 95%