[15a-419-1~10] 6.3 酸化物エレクトロニクス

▲ [15a-419-7] n-Cu₂O/p-Cu_xS Thin Film Heterostructures for Solar cells

〇Jayathilaka KMD Charith^1,2、Kumara L.S.R.³、Song C.H.³、Kohara Shinji³、Sakata Osami³、Siripala Withana¹、Jayanetti J. K. D. S.² (1.Univ. of Kelaniya、2.Univ. of Colombo、3.NIMS/SPring-8)

キーワード：Cuprous Oxide, Sulphidation, Electrodeposition

In this study, the n-type cuprous oxide films were electrodeposited potentiostaticaly on Ti substrate in acetate bath. A Junction of Cu₂O/Cu_xS was formed by partially sulphiding the Cu₂O films using an aqueous sodium sulphide solution. Resulting Ti/Cu₂O/Cu_xS/Au solar cell structure produced V_oc = 520 mV and J_sc= 11.4 mAcm^-2, under AM 1.5 illumination. The obtained cell yielded a power conversion efficiency of 3.64%, which to the best of our knowledge is the highest reported efficiency for electrodeposited Cu₂O based solar cells.