{HEAD ~ Present organic semiconductor compositions} for optoelectronic device applications such as photodetectors and photovoltaic devices are deficient in {TAIL ~ one or more attributes} of exciton diffusion length, carrier mobility, and optical absorption coefficient 
are deficient in
{ HEAD ~ Present organic semiconductor compositions } for optoelectronic device applications such as photodetectors and photovoltaic devices are deficient in { TAIL ~ one or more attributes } of exciton diffusion length , carrier mobility , and optical absorption coefficient
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH