| 摘要 |
PURPOSE:To stabilize characteristics, in a manufacturing method of light receiving elements including a process for forming a photoconductive film and a process for activating heat treatment of the film, by controlling each process so that the relationship between a photocurrent and response speed becomes a specified exponential relationship. CONSTITUTION:CdS powder and CdSe powder, which have undergone primary activating heat treatment, are mixed. A common fusing agent such as CdSl2, low melting-point glass frit and an organic oil component are added in the mixture. The mixture is crushed and kneaded for a specified time, and a printing paste for photoconductive film is prepared. The paste is printed on a substrate 1, which is then arranged so as to face a reaction controlling printed film 5. Thereafter, activating heat treatment is performed. Each of the above described processes is controlled so that the correlation between the signal current of a light receiving element and an optical response speed becomes a specified exponential relationship. The light receiving element obtained in this way is stable for a long period, the characteristics are not fluctuated and sufficiently high reliability is obtained.
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