JPS6476777A - Light transmitting type solar cell - Google Patents

Abstract

PURPOSE:To increase the output per unit area of a solar cell, and enable low cost manufacturing, by turning the most distant film from a substrate into microcrystal, and selectively arranging a second electrode layer. CONSTITUTION:On a glass substrate 1, a first electrode layer composed of an SnO2 film is formed, which is subjected to patterning by laser scribing method to form first transparent electrodes 21, 22, 23. Thereon the following are formed by plasma CVD method; an amorphous semiconductor P-layer from a mixed gas of B2H6 and SiH4, an I-layer from SiH4 gas, and a microcrystal semiconductor N-layer from a mixed gas of 1% PH and SiH. These layers are subjected to patterning to form P-layers 51, 52, 53,..., I-layers 61, 62, 63,..., and microcrystal N-layers 71, 72, 73,.... Second electrodes 41, 42, 43,... are formed by a usual printing method. The second electrode layer is not formed on the whole surface, in order that light may be able to transmit through a translucent substrate, a transparent electrode, and a semiconductor layer. Photovoltage generated in the semiconductor layer in the region which is not in contact with the second electrode layer is led out from the low resistance microcrystal film on the side where the second electrode layer is formed. Thereby obtaining a light-transmitting type solar cell of large output.