Author/Authors :
T.، Kato نويسنده , , T.، Matsumoto, نويسنده , , T.، Hirai, نويسنده , , Y.، Ito, نويسنده , , M.، Felici, نويسنده , , V.، Cesari, نويسنده , , A.، Polimeni, نويسنده , , A.، Frova, نويسنده , , M.، Capizzi, نويسنده , , Y.D.، Choi, نويسنده , , B.، O, نويسنده , , Y.-M.، Yu, نويسنده , , Y.، Nabetani, نويسنده , , T.، Okuno, نويسنده , , I.K.، Sou, نويسنده , , W.K.، Ge, نويسنده ,
Abstract :
The authors studied the effect of hydrogen irradiation on the optical properties of ZnTe, ZnTe/sub 1-y/S/sub y/ (y=0.015) and ZnSe/sub 1-x/O/sub x/ (x=0.0023, 0.0057 and 0.009) epilayers. Photoluminescence measurements show the full passivation of O-related recombination bands in ZnTe and ZnTe/sub 0.985/S/sub 0.015/ samples unintentionally doped with oxygen. However, hydrogen irradiation does not affect the bandgap reduction following O incorporation in ZnSe/sub 1x/O/sub x/ alloys. This lack of interaction between O and H in ZnSe/sub 1-x/O/sub x/ points toward a scarce localised character in the ZnSe/sub 1-x/O/sub x/ band edges, as supported by the study of the temperature dependence of the ZnSe/sub 1-x/O/sub x/ bandgap.
