Title:
PHOTOELECTRIC CONVERTING DEVICE
Document Type and Number:
Japanese Patent JPS5818972
Kind Code:
A
Abstract:
PURPOSE:To reduce the surface reflection factor in a wide wavelength region by a method wherein a reflection preventing film of metal oxide, having titanium oxide as a main ingredient, smoothed irregularities and the thickness of 600- 1,000A, is provided on the light-irradiating surface of a photoelectromotive force generating substrate, and an irregular reflection is generated in the film. CONSTITUTION:A PSG film containing high density of p is deposited on a p type substrate 1 consisting of single crystal or polycristalline semiconductor, and an n<+> type layer 2 is formed by diffusing said p in the substrate 1 by performing a heat treatment. Then, a comb type electrode 7 and an external lead-out electrode 6 are formed by performing a screen printing on the surface of the layer 2 using the paste such as Ag, Al, Ni and the like, and a reflection-preventing film 3 of 600-1,000A in thickness is deposited on the whole surface including said electrodes 6 and 7 by performing a screen printing using the ink having Ti oxide. The size of meshes and the viscosity of the ink used for the above screen printing are to be properly selected, and a number of concavities 15 and convexities 14 are formed on the surface of the film 3. Subsequently, a back side electrode 4 is deposited on the back side of the substrate 1 using similar material.
Inventors:
YAMAZAKI SHIYUNPEI
Application Number:
JP11729081A
Publication Date:
February 03, 1983
Filing Date:
July 27, 1981
Export Citation:
Assignee:
HANDOTAI ENERGY KENKYUSHO
International Classes:
H01L31/04; H01L31/0216; (IPC1-7): H01L31/10
Domestic Patent References:
| JP55108762B |