In {HEAD ~ a process} for producing an electro electricity generating device, there has been known that a reflection layer of, e.g., metal is formed on the back side of an semiconductor layer in order to improve a light collection efficiency of {TAIL ~ the photo electricity generating device} on a long wavelength 
In { HEAD ~ a process } for producing an electro electricity generating device , there has been known that a reflection layer of , e.g. , metal is formed on the back side of an semiconductor layer in order to improve a light collection efficiency of { TAIL ~ the photo electricity generating device } on a long wavelength
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH