[19p-P12-1~27] 21.1 Joint Session K

[19p-P12-22] Effects of H₂O₂ treatment for ultraviolet photoresponse of ZnO single crystals

〇Yasuhiro Kashiwaba¹, Akihiro Ando¹, Mio Sakuma¹, Koji Kawasaki¹, Yuji Imai¹, Takami Abe², Akira Nakagawa², Ikuo Niikura², Yasube Kashiwaba², Hiroshi Osada² (1.NIT, Sendai College, 2.Iwate Univ.)

Keywords:ZnO,hydrogen peroxide

The effects of H₂O₂ treatment on photoconductive properties of the O-face of ZnO single crystals are described. Time response characteristics of the photocurrent were measured using the UV light with the wave length of about 360 nm. The photocurrent of the O-face of ZnO single crystals with H₂O₂ treatment was smaller than that of ZnO single crystals without H₂O₂ treatment. Decay time responses of the O-face of ZnO single crystals with H₂O₂ treatment was faster than that of ZnO single crystals without H₂O₂ treatment. We explain these phenomena by the energy band model near the surface of ZnO.