In such a case, specifically in {HEAD ~ a photoelectric element} 40 serving as {TAIL ~ a photoelectric conversion element}, holes generated by charge separation on a reaction interface are efficiently transported from the hole transport layer 5 to the second electrode 6 by very rapid electron transfer reaction of the stable radical compound 
serving as
In such a case , specifically in { HEAD ~ a photoelectric element } 40 serving as { TAIL ~ a photoelectric conversion element } , holes generated by charge separation on a reaction interface are efficiently transported from the hole transport layer 5 to the second electrode 6 by very rapid electron transfer reaction of the stable radical compound
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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