Optimization Of Optoelectronic Characteristics Of Sintered Cadmium Sulphide Photoconductive Layers

Mary Juliana Chockalingam; C. V. Suryanarayana

doi:10.1117/12.936524

6 November 1986 Optimization Of Optoelectronic Characteristics Of Sintered Cadmium Sulphide Photoconductive Layers

Mary Juliana Chockalingam, C. V. Suryanarayana

Proceedings Volume 0686, Infrared Detectors, Sensors, and Focal Plane Arrays; (1986) https://doi.org/10.1117/12.936524
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

Photograde cadmium sulphide useful for sintered polycrystalline cadmium sulphide photoconductive cells as also for solar cells can be prepared by a simple chemical reaction between a soluble cadmium salt and thiourea in an aqueous alkaline solution by optimising the pH, temperature and concentration of the constituents in the bath. The precipitated cadmium-sulphide after drying at 120°C was found to result in a photograde quality of 99.999% pure cadmium sulphide as estimated by atomic absorption spectrophotometer. Details are given in this paper, of the process of preparation of CdS powder, screen printing and sintering the cadmium sulphide layers to give finally the photoconductive cell which gave on irradiation a change in the resistance of six to seven orders. The sintering technique and the mechanism of the reaction resulting in high photosensitivity of the layer obtained are discussed in detail.

Citation Download Citation

Mary Juliana Chockalingam and C. V. Suryanarayana "Optimization Of Optoelectronic Characteristics Of Sintered Cadmium Sulphide Photoconductive Layers", Proc. SPIE 0686, Infrared Detectors, Sensors, and Focal Plane Arrays, (6 November 1986); https://doi.org/10.1117/12.936524

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