heating said {HEAD ~ precursor film} in a suitable atmosphere to form a film including a compound selected from a Group IB IIIA VIA compound for said {TAIL ~ selected Group IB IIIA alloy phase}, a Group IIB IVA VA compound for said selected Group IIB IVA alloy phase and a Group IB VA VIA compound for said selected 
heating said { HEAD ~ precursor film } in a suitable atmosphere to form a film including a compound selected from a Group IB IIIA VIA compound for said { TAIL ~ selected Group IB IIIA alloy phase } , a Group IIB IVA VA compound for said selected Group IIB IVA alloy phase and a Group IB VA VIA compound for said selected
OTH 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 TAIL TAIL 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